Grinder/Sander

[bigsteel15]

I know I should ask questions before I buy but we've determined that I'm an impulse shopper.
Picked up this unit a couple days ago for $149.
http://www.general.ca/pagemach/machines/15232a.html

What I'm wondering is if I should just use the sander for sharpening (Sorby jig) or is a 6" wheel turning at 3450 RPM going to be OK for lathe tools and other grinding requirements.
I was thinking possibly an 8" VS grinder might be more suitable.

Thoughts?

[Popeye]

For what it's worth, the turning guru at the local Woodcraft says he sharpens all his lathe tools on a 1" belt sander. The only time he uses a grinder is if he's changing the bevel on a tool a great deal of if a tool gets dropped. Pat