I use the Meade 178mm Maksutov-Cassegrain on an Orion Skyview Pro with the dual-axis TrueTrack motors and it works fine for visual and planetary photography. The EQ6 is better (and much heavier) but as long as I'm careful not to touch the telescope too much, it's pretty steady.
It should work for visually and for planetary imaging as well, especially if have the clock drive
As for the shakiness, it is up to your personal threshold: the scope will be steady, but not as a rock (I am a bit finicky, but use my C8 on the Astrotrac....)
Thanks for the input. I do have the TrueTrack drive motors and a polar scope. I will be limited to the SVP for now and will have to make the best of it. I was afraid it might be too shaky to get good visual focus, but I feel better that you are using an even larger (I'm sure heavier) mak-cass on the SVP and report it works fine, so I think I should be good to keep the mount.
Looking forward to getting back to doing some observing after my hiatus. Once I have the new mak, it post my thoughts.
Clear and Dark Skies,