I am not sure why nobody has replied here or why this is not important? Since,
1. Most guys in the forum work/surf on their home computers at least an hour.
2. All workplaces (even the ones touted as employee friendly) are loaded with stress and almost none offer any sort of really useful ergo work areas, like a keyboard mat, split keyboards, tented keyboard mount, motorized standing desks etc. Most, if at all offer one/two variety of ergo chairs decided by some honcho who never works on a desk for more than 3-4 hours. So what I am trying to say is all these factors create a really stressed up positions and when you reach home you have all sort of prolonged pain all around major muscle endings.
3. Most of the guys in the forum/some of the visitors have started/will start getting some form of RSI now or in future. Even though the RSI may have happened from work/external injuries, they would still come home and work with a recently tired/injured arm. Since RSI may get reduced when you change the 'repetitive' pattern of a fixed set of muscles, a chair mount will work on a separate set of muscle groups. I am not talking about the exact same tendons/muscles, rather about the bulk of connecting helper tissues, recently discovered/named as fascia tissues (muscles?). With a chair mount a different/overlapping set of fascia tissues will work. This might help some healing? Please read more about fascia stuff, very interesting theories.
You wake up in the morning after a good nights sleep. Squeeze your skin and then your muscles. it hurts on same spots almost every day? You have me. Try to open a jar fresh in the morning. Can open in left/right hand? The lid slips in your hand. You got me. Have been facing these lot of times. Might be something to do with massive amount of overworked muscles all around the body. Exercise/Physical Therapy may help a little here.
Who am I to tell these? Yes, I am a programmer working 10-12 hours outside as a contractor (tons of unnecessary stress and not a boat load of money!); includes 2 hours bay area bumper-to-bumper commute. I also work another 3-4 hours on average at home keeping up/trying new projects, working on new ideas etc.
I have accumulated RSI and what not other (mis)alignment issues in all these time and been on and off with western medication as well as physical therapy. Have not helped much. On off these the problems come back in a few weeks.
I made an experimental gig to mount two keyboards on my chair as well as an expert mouse at home and found much relief and reduced pain. Rather i found my pain in my right arm has much reduced and left has started to be slightly sore hinting that the muscles are working. I also tried chinese herbal medicine to increase blood flow (+whatever secret ingredients the practitioner put). This has helped me tremendously.
But the biggest benefit is the mountings.
Now I can write a lot about these things but guess nobody wants to know the gory stuff about human body, work habits, weird chinese medication, ergonomics and conspiracy theory...
I need a quality chair mount.
Anybody else interested, please pile on.
We need some help here...