It certainly wouldn't be a disaster if standard non-damping grease were used.
Certainly not a disaster. Could always clean it off later.
You might even find the backlash adjustable enough to be perfectly usable.
The equatorial mount of my Jason 313 has become close to unusable since removing the original dampening grease. The good news is that the original grease froze so hard in cold weather that the scope became close to immobile. With Mobile Synthetic, everything turns so freely that even the weight of the dangling slow mos can rotate the mount. (The slow mos do not dangle freely; they favor a certain curve.) Adjusting the tension between the worm gears has not changed this. So, I've learned that dampening grease matters, and am following this thread looking for answers.