Stone of Fire pre combat proc warlock

[Xelectra]

Is there anyway to proc the Stone of Fire pre combat to use the proc and then swap back to my class trinket as a warlock? I know as a rogue and a mage its possible but as a warlock is it possible?

[kushlol]

warlocks dont have invis or vanish to instantly drop combat so I would probably assume no.

[Incinerate]

^^ This...