I've had them both. Both are equally very high quality, using Vulcanized Rubber (which is basically indestructable with normal wear and tear) but the Everest Band has a design that allows the SEL to sort of "float"...affording much more comfort. Not to mention the Everest will save you over a c-note.
I sold off the Rubber B once I started using the Everest.
I've started a Thread regarding the Everest......let's not hi-jack the OP's Thread here. And thanks to his thread showing this AWESOME looking GMT IIc I've now started wanting one.
AWESOME Pics Brother. That's a Beauty