Unanswered Tyre jack on 29" ~2.6" tyres

[Hcd]

Has anyone used a tyre jack on 29" ~2.6" tyres? If so, what feedback have you got - model/pro/con/etc?

 

[Hcd]

Something like this - tyre bead jack

 

[Rusty]

Hell, I use my thumbs mostly.

 

[militantmandy]

I typically use a bucket.

 

[steve_sordy]

If I need a device to remove a tyre, then I'd have to carry it with me for when I needed to do so on the trail.
All I have needed so far is two tyre levers and a bicycle mini pump (used as a stick to apply force from my shoulder to the sidewall). I need an anvil of course to rest the wheel on, so any tree stump, fallen tree, flat rock, park bench, whatever is handy.