I sold my Elite Suito (direct drive) and bought an Elite Quick Motion (dum roller) with magnetic resistance.
I think you can reach FTP intervals with no issues on yours. I do Vo2 max on mine, although mine has 3 levels of resistance, and I’m using level 2 for Vo2.
For me, rollers have been way better trainer tools than a static rigid turbo. There’s movement, it feels like road. You don’t just jump in something and let the equipment do your job (ERG mode). You have to play. There’s mental focus to keep up. My saddle soreness on the static turbo went away with rollers. Plus, you can use it everywhere and store it easily to free space.
I don’t think you’ll be able to do high anaerobic efforts - sprints. Also, you might need a set of cheap/dedicated tyres. I don’t think the wear and tear is too high, but there is. I’m training and feeling my expensive (very very expensive) GP5K going away 
. So I bought a cheap wheelset and cheap tyres so that I can use them on the rollers and outside for daily training. I will leave the GP5K and carbon wheels for fast group rides or races only.