Not sure how practical it would be, but if you know someone who is a dab hand at overlock stitching try butchering a cheap set to make a shirtcuff-esque split or v-/u-shaped cutout to take pressure off where the tendon comes to the surface.
This is what I've done with an assos pair, as I also have big guns (fat arms). Cut the elastic at the seam and sewn the bottom of the cut so it won't rip further. I kept getting a sore tendon on long rides before work better now and still stay up.
Not sure how practical it would be, but if you know someone who is a dab hand at overlock stitching try butchering a cheap set to make a shirtcuff-esque split or v-/u-shaped cutout to take pressure off where the tendon comes to the surface.