You ask the agent to ask the seller to desolder the switches. I can't guarantee you'll get a yes, but I've had it done before. Also, I would pass on the switches unless you're getting them for no more than 30-40 cents each after agent fee, paypal fee, and shipment x 2. After all, they are used. I'm also fairly sure shipping those whole boards will be at least $30-40, whereas shipping 100-200 switches would only be $5-$10.
No idea on stabs.
Right you are, not greys.
Ehhh you might have been right about the last photo, but even then they have the same exact stem as clears.