Topeak has come up with an eBike-specific work stand. It appears to use a gas strut like they use for car tailgates. At $950, it's spendy, though they have a 4-pay option:
www.topeak.com
Works with up to 77 lb. eBikes.
It's pretty cool, but too expensive for me. I'll have to wait until the Chinese figure out a way to beat the patents. :-(

PREPSTAND® eUP PRO
<p>The PrepStand® eUP Pro is the first lift assisted foldable workstand – ideal for working on e-Bikes and other heavyweight bikes. Additional Reinforced Support Unit adds stability while a bike is mounted. The foot pedal operated, built-in pressurized cartridge provides an additional 17kg...

Works with up to 77 lb. eBikes.
It's pretty cool, but too expensive for me. I'll have to wait until the Chinese figure out a way to beat the patents. :-(