Kosh its not so much the weight that is the problem for eq mounting (though that is a consideration) but the lever arm movement of such a long scope.
Think of it this way. If you hold a pencil between your thumb and forefinger and blow on the end of it from the side, it won't move much. But if you swap that pencil for say a one meter ruler (ignore the weight for the moment) and blow on the end of it its much harder for you to hold it without sideways movement than the pencil. That's lever arm movement . But its not just wind. Any movement of your mount (gears turning, mount settling) will be amplified along the scope, so for photographic work it makes taking images a real challenge. Even for visual work it can be a challenge. Oh and it doesn't just happen sideways, the same principle for up and down.
Its only an analogy but hopefully you get the idea. The longer (and weightier) the scope the stronger and more stable the mount needs to be.
So what sort of mount. Usually a fairly expensive one unfortunately
. I have seen 10" mak newts mounted on LX75 (I'd hate to try to image with one and keep my hair, though some people do it successfully) and I've seen 10" reflectors mounted on EQ6s (hell I've seen a 12", the guys hair was pretty patchy though). IMHO an eq6 would be a minimum for success with a 10" scope if you are thinking imaging.
JMO