I like the potential that the touch screen offers. Session Drummer 3 on a touch screen would be awesome! but I think that for me touch is a long ways out. For one my VS-100 does not have windows 8 drivers that I know of. The last version was 1.50 and it is very good for windows 7. I am not so sure that it would work that well in windows 8 and that is the main reason I have not upgraded.
I Have two very nice 23 inch monitors that do everything I need them to. I went to best buy today to price a good size touch monitor (23 to 27 inch). The cheapest I could find in the store was a monitor for 800 bucks. The price goes up from there. I can not justify replacing one of my awesome monitors for something like that. For that price I could buy some really great music gear. I could buy some really good plug ins too.
I know things will change. New drivers will be released and prices will come down. I just think it may be a while before touch screen becomes a reality for me. So for me it may be a bit early. That just gives cakewalk time to work out all the potential bugs. I think touch screen looks really cool. The hard part is getting past the hardware investment.