I started on a FX, I switched to a road bike pretty quickly but I kept the FX as a commuter and errand bike. My first one was destroyed in an accident, however I bought a replacement and still use it between 50 and 100 km a week to this day. Awesome bike!!

I have also done rides of more than 50 km in one day in the FX and it's not a problem. I would not do that by choice all the time, I do prefer my road bike for long rides, but it's not going to stop you from starting into long rides.

If I was to start again I'd do the same.