Bing cherries are awesome! They are my favorite!
The taste has nothing to do with the ultra dwarfing rootstock, so they will taste like any other Bing.
They do need about 700 hours below 45 degrees, so I don't know if you'll get fruit in your area.
Sometimes Home Depot will carry things if the zone is correct for the area, regardless of whether it will actually fruit in that area. They are catering to all of us zone-pushing addicts.
Maybe you could borrow a ski resort's snow machine next winter. . .
Cheers,
Carolyn