I've got an equatorial 5 but as I say unless I'm gonna get easier access to the eyepiece it would be pointless swapping.
Regardless of the type of telescope you have, they are sometimes going to be in positions where the eyepiece is in an awkward position. I personally use a 10" Schmidt-Cassegrain on a fork mount and when looking directly overhead, the eyepiece is low although it's not as bad as a refractor scope would be. The short tube length of the SC helps keep the eyepiece within a relatively small area (The tube length is only around 15" long, but it has a focal length of 2500mm. However, by carefully adjusting the tripods leg length and using an observing chair, I usually don't have any problems. I also have an 8" Newtonian which is better than a refractor as far as eyepiece comfort is concerned. But since the eyepiece is at the front end of the scope instead of the back, there have been times I've had to use a step stool to reach the eyepiece and I'm 6' 2" tall. I've used about every telescope style and mount and for observation, I prefer the SC for mount to anything else.
I think I will have to work out a way as you say with a longer length tripod and an observing chair. As you say at different altitudes your bound to get varying degrees of comfort no matter where the eyepiece is situated.