I've recently abandoned distancers altogether.
If you open up the holes in the driver housing to let some more air through to the driver and then line the driver housing with some felt to control the resulting increase in bass, this seems to make them very ammenable to jumbo pads.
The MS1000 method of layering up kitchen felt to control treble and thus increase the balance of bass does also reduce the clarity a little, and the sub-bass never gets to the quality of the hole punch mod (IMO) although on the flip side the MS1000 clearly wins in sound stage - much larger, although the hp method still has a great ss.
Now I can just wear jumbo pads straight on the MS1 and they are a better fit and don't look quite as silly. The down side is that while it extends the sub bass and keeps the perfect clarity while using jumbos, if I go back to bowls or flats there is also a bit of extra mid-bass. Not much, but it's there and as Grados usually have such controlled mid bass, it does seem out of place.
All in all it's a personal judgement call, since it is non reversible and the MS1000 mod isn't, I can understand a lot of people won't go for it. But for me, I only bought the MS1 because you can mod them to use jumbos - and I think I've found the best way for me of doing that.
If you open up the holes in the driver housing to let some more air through to the driver and then line the driver housing with some felt to control the resulting increase in bass, this seems to make them very ammenable to jumbo pads.