The guys making the Skyler Minicam Stabilizers look like they've been busy in the last few months. Not only have they released another Skyler Minicam Stabilizer model with folding legs and Arca swiss quick release plate, but they've also added a new ForeArm Brace.
When a full Vest if too bulky, and when your arms get too tired from flying, an arm brace can sure come in handy. If you're not a DIY type of guy/gal, then your other option for a forearm brace is the bulkier Flycam version (below).
Flycam Forearm Arm Brace for Flycam and Glidecam HD Stabilizer
Something like this new Skyler MiniArm is most likely not going to be comfortable with your large Glidecam setups, but for all the new mini handheld stabilizers popping up and pocket cinema cameras, it should do well to provide arm strain relief.