As far as I know the EQmod only works with Skywatchers.
I have been thinking about the same thing as I will need a bigger mount for a bigger scope and from what I have read the EQ45 isn't worth the extra cash depending on what it is you want to put on it and people don't seem to like the spring loaded anti backlash. There also seem to be reports of it being a very wobbly mount with longer scopes.
I suppose both mounts have their advantages though.
Not to mention this write up, kind of enough to make me think before buying an ioptron product.
http://www.cloudynights.com/ubbthrea...4/Main/4612008
All this points me towards the NEQ6, if I can find just the mount an no tripod even better.