If you are doing a one-off web app, lesser tools may do the job faster, since they do not require the initial learning investment.
I agree. My immediate needs didn't require the heavy-duty capabilities of Interchange, but at the same time I was trying to think long term. I really wanted to use it, but like most people I'm busy and at some point I just have to move on.
I'll be glad to provide some feedback - I'll even start over and document where I run into problems. /msg me if you're interested and we can correspond outside of perlmonks.