When comparing Arensito vs Norman, the Slant community recommends Norman for most people. In the question“What are the best keyboard layouts for programming?” Norman is ranked 8th while Arensito is ranked 11th. The most important reason people chose Norman is:
Norman keeps 22/26 letters in their original QWERTY finger, making the transition easier, and, according to many tests, does so without much loss in ergonomics.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Reduces load on pinkies
Pro Emphasizes adjacent finger bigrams
Common bigrams are a fast rolling motion, like Colemak.
Pro Minimizes same-finger bigrams
Pro Puts your thumbs to good use
Your strongest fingers are your thumbs. In this layout (unless you have a keyboard with thumb keys) you shift your hands up one row, and you use your thumbs on the bottom row. (Put your index fingers on QWERTY's T
and I
keys, and rest your thumbs on VB and NM) The Ctrl and Shift modifier keys now use your strong thumbs instead of your weak pinkies. (Ctrl shortcuts are especially important for programmers.) The modifiers may contribute more to RSI than letters.
Pro Punctuation also optimized for programming
AltGr plane has accessible punctuation and numbers. The most used are directly under your fingers on the (new) home row, and all the bracket types are paired and in easy reach.
Pro Balances load between hands
Statistically, the left and right hand are used about the same amount.
Pro Easy access to common punctuation and numbers
Programmer punctuation and numbers are accessible without stretching on the AltGr plane. (AltGr is now on the spacebar).
Pro Uses the same fingers as QWERTY for most letters
Norman keeps 22/26 letters in their original QWERTY finger, making the transition easier, and, according to many tests, does so without much loss in ergonomics.
Pro Keeps many common QWERTY shortcuts intact
Common shortcuts, such as ctrl + z, ctrl + x, etc., are kept in their original positions without much loss in ergonomics, making the transition easier.
Pro Feels fast and comfy
Pro Focuses on the keys easiest to reach for the human hand
Like Workman, Norman takes human anatomy into account.
Pro Designed using normal keyboards in mind
Unlike keyboard layouts such as workman that are desgined to be used by matrix keyboards, norman is made to be used by a standard keyboard.
Pro Favours the right hand
Unlike other layouts, such as workman, norman favours the right hand due to it usually being stronger than the left.
Cons
Con Pointing stick is no longer on the home row
Most keyboards don't have one, but if you use it a lot it becomes a bit of a stretch. On the plus side, a keyboard with a pointing stick will have mouse buttons you could remap to thumb keys instead.
Con Hard to orient in a new position by feel
Most keyboards have bumps on two of the keys to orient touch-typists. On QWERTY, this is usually F and J, but sometimes D and K. On some keyboards you can fix this by swapping keycaps. You could also try adding small stickers with enough thickness.
Con Letter keys as modifiers may cause jamming or ghosting
Cheap keyboards designed for QWERTY might struggle with the use of Arensito's letter keys as modifiers. Gaming keyboards with n-key rollover don't have this problem. And any keyboard with proper thumb keys (Kinesis, Ergodox, Maltron) works properly. There is an older version of the layout that keeps QWERTY's home row that you can use on cheap keyboards, but it's not quite as nice.
Con Copy-paste shortcuts are right-handed
XCV are on the right side. This makes it difficult to cut/copy-paste with the mouse in the right hand.
Con Bad on SFBs
Lots of same finger bigrams (when 2 keys are hit simultaneously by one finger like the qwerty "ed".
Con A very small user base and community
Con Designed for right handed use
The Norman was designed with right handed use in mind, making it a less attractive choice for left handed users. However, tests done by some users (can be found in the comments) suggests that the Norman layout might be balanced.
Con Scores worse in ergonomics using the Carpalx test
Norman, although scoring better in travel distance, generally scores worse in the Carpalx test than layouts such as Colemak. See the source here.