I like glidecams, mainly because the footage looks a bit more natural and because it doesn’t require any batteries. I don’t have the Pocket 4K, but I have a rigged-up Blackmagic Micro Cinema Camera that works really well on the top-of-the-line Devin Graham glidecam. I bought that version of the glidecam because it can carry more weight (I may eventually upgrade to an Ursa Mini) but mainly because it has only two adjustment knobs, which makes balancing a lot easier.
The Micro has a much more compact form factor than the Pocket 4K, but there’s quite a bit of side-to-side positioning available in the balancing plate of the glidecam; if its center of gravity is more to the right or left I would think you should still be able to balance it.
I use a relatively short prime wide-angle lens on my Micro when using it on the glidecam, and I mount the monitor on rails behind the camera to balance out the front-and-back weight. I tried mounting the monitor on the baseplate of the glidecam like you’re supposed to, but the monitor cable tends to get in the way or snag on things even if I tie it down.
There’s quite a bit of discussion on the Blackmagic Design user forum (in the Cinematography section) on gimbals for the Pocket 4k. A Google search should turn up most of those threads.