I have used both of their systems, the two-wheel BGBUFF and their copy of Beall's three wheel system, PSI's LBUFFSYS. They both work very well, but Beall's is much higher quality than the LBUFFSYS. Of course, it costs almost twice as much, too.
Beall's three wheel system and PSI's LBUFFSYS are both rather long and barely fit on a Jet 1014. PSI's smaller BGBUFF system from Barry Gross fits very nicely, but is only for acrylic and glossy CA finishes. The three wheel systems work with acrylic and CA, as well as friction polish, shine juice, etc. on wood turnings.
For your purposes, I think I would recommend either of the three wheel systems. Beall's is better, but more expensive. PSI's should work fine for your needs. One note about PSI's instructions... At one time, they did not tell you that you needed to "de-fuzz" the wheels first. Beall's instructions gives very good details about this and is very important to do before you start using them.
Also, please keep in mind that it is very easy for a seeing person to have pen blanks snatched from you hands (been there, done that) and shot across the room. I would be even more cautious with turners who are vision impaired.
Check out the instructions and videos at Beall's web site at
The Beall Tool Company The videos use a bench buffer instead of a lathe, but you'll see how it's done.
I really like the buffing mandrels for the lathe since they don't require a dedicated machine. Of course it's great if you have the lathe and the space to leave one set up, but you don't have to.