I've been vaping daily for a few years (with this forum to thank for helping me find the Purple Days vaporizer), and also using tincture off and on. Tincture I generally use daily when I have it, then it runs out until the next harvest.
I've found much more of a tolerance buildup from tincture use than vaporizing. I'm a lightweight, so 1-2 PD bowls generally does it for me. My tincture dose, on the other hand, varies quite a bit. If I haven't had any in days or weeks, I'll only use 1/2 or less of my normal tincture dose. The amount of tincture I use after tolerance has built up would leave me uncertain of which way gravity was pulling me if I had ingested that much without a tolerance buildup.
So anyway, I've found about a 2:1 ratio of doses between before and after I build up a tolerance to tincture; a bit higher ratio than my vaping tolerance.