I think sharp end users could program a URC or an RTI and make it work to their satisfaction. Like David said, some are probably better than we are and can blow us away with photoshop skills.

HOWEVER....

I don't think most END USERS OR PROS would do their best work on the FIRST ONE. In the end-user's case, the only one - so yes, working, in varying degrees, but how well?

After doing a dozen or two of any remote you can look back and see how much you have learned and how much better the experience is getting for your clients.

A "short face to face tutorial"? Maybe it's me, but I can't see that as being adequate for "a lot of people" without significant follow up questions.

YMMV.