This thread began some time ago, so Kevin has probably moved on, but in case anyone else is curious about the Tormek jigs on a belt grinder, especially the Viel S5 (1x42") model, here is my experience.
My entry to Tormek was with the BGM-100 and several Tormek jigs, all mounted in front of a Viel. (I have three Viels, one I have equipped with a variable speed reversing motor, and that is the one I used for the Tormek application). I did it just as Ken envisioned, with the BGM-100 mounted on a stout wooden block just in front of and to the right of the belt. I was chasing a dream: the Tormek jigs with my existing flat bevel grinding and sharpening equipment.
It is because I never found a way to make this satisfactory that I recently went whole-hog and got the T-8. I still have the Viel / BGM-100 set up in place, but the T-8 is so much better in every respect (except for speed in some applications) that I am not using the Viel / BGM-100 setup much anymore.
One important limitation I found with the Tormek jigs on the Viel is that the Tormek jigs are designed to take advantage of the clearance that is created by the curvature of the wheel. With the knife jigs, for example, I found it very difficult to get anything better than a 20 degree bevel (for a 40 degree edge) on the flat surface. Anything more acute and the jig hit the belt, whereas it clears the wheel on the Tormek because the wheel falls away underneath the contact point. The scissors jig is better but you find yourself bumping into things on the Viel/BGM setup that just aren't there to be in the way on the Tormek machine. An exception is turning tools in e.g. the SVD-186, where there is a lot of projection out of the jig so that the jig can be far back from the belt (but a 1" belt is narrow for that task).
I have had my Viels for over 20 years and love their simplicity and versatility--I hope to use them for 20 more. But I couldn't find a good fit with the Tormek jigs, and think that it is worth saving to get one of the Tormek machines rather than wrestling as I did with something like a Viel / Tormek combination.
Gord