Likewise my company is 100% PSGI for the last year+, we're a mix of a good number of Catalyst and Dancer apps. We've had absolutely 0 problems here.
PSGI stable, sane and the way you want to be doing things.
PSGI stable, sane and the way you want to be doing things.
Indeed if you write an app to run on DotCloud; you can also run the same app on your laptop, Phenona, any other server -- etc etc.
As someone else said (more politely), you'd have to be nuts to do an HTTP app now and not take advantage of it.