Interesting, when you've used Rubio, was it with the Accelerator?It's funny, that's more or less the opposite of my experience!
I suppose I should say I've never used either product on a guitar, only on furniture. But I definitely found the osmo to be thicker than the rubio.
If you look at the osmo website, they say 2 coats if using a brush or roller, and at least 4 coats if using a rag.

