Switch to narrower rims on a hybrid? Following up on my original wheel issues question, I went to see my local cycling store to tell them about my problem.

I want to change rims and would like to have them support tires from 23 to 28mm. My frame is a hybrid one, perhaps a bit on the MTB-side, so I originally have a 17mm wide rim (supporting 25-38mm tires).

I did not have a lot of time but the guy said there were no rims to fit my needs and that at best I would be able to comfortably run on were 25mm tires...

Was there some kind of misunderstanding between us or was he making a valid point?
I would think that concerning the rim there must have been a misunderstanding. You should be able to run a narrower rim, and simply adjust the brakes, unless there is a reach issue with the brakes.

It's possible that the hubs on your wheels are MTB style, which have a different width than road hubs. You would still have the option of buying new rims and having them laced to your existing hubs if you are serious about running narrower tires.

That said - as a long time recreational rider/commuter - I don't see much benefit from running any tires narrower than 28-25 unless you are planning on racing (which isn't really a target use for your bike).