My friend who has tendonitis (he believes; currently seeking referral from a GP) is trying to find a way to type and program without using a conventional keyboard that causes him much discomfort. He is considering the Twiddler3, does anyone have experience that would inform whether this would be helpful? He has also tried my Model 01 and says it is better but still a little uncomfortable…however, he is also considering it as his tendons continue to presumably heal while he is not using.