In the old days, I reloaded Federal Papers exclusively with plastic wads and Red Dot powder on both a Ponsness and Mec. They had the 6 star crimps and of course the smell was like perfume
While I've never used a roll crimper, there is no reason you can't roll crimp them and use either felt wads or plastic wads. Certainly it's faster and easier to use plastic wads. I guess it all depends on how many shells you have to load. If you only use them for hunting it wouldn't be too time consuming but if you shoot a lot of clay targets, it could get take you a long time just to load 100 shells. If you really want to use fibre/felt wads, you can get them here:
http://www.circlefly.com/ Do a search for other threads on this site for suggestions on roll crimping.