[Crex]

WNC just let your imagination go a little. Diff models require slightly diff approaches, but haven't seen any that couldn't be adapted to a simple vertical mount. If shopping for one opt for the deep cut model, gives a little more wiggle room on what you can feed through it.
Just be careful when drilling through a handle, several models have their trigger wires pulled up through the hollow in the handle. Don't want to nick those.

On that Griz model stand, the blade will be moving in the wrong direction. With the kind of torque most of these puppies have doing things upside down would be down right scary. Also there is no "table" to support your object to be cut. Looks like it would be a lot of trouble to modify for use as I see it.