So, how well does that stuff stay in the pores under adverse conditions. Up until back when Reagan was still in office I worshipped at the alter of filling pores with various magic potions, "sanding slurry", etc. A couple of times caught in pouring rain saw the "fillage" wash right out of the pores- because they weren't sealed in by a barrier-type finish. Other old projects found the pore fillage shrinking over time, creating an effect not unlike the pores never having been filled at all. I swore off such stuff back then and life has been good for 30 years.
The effect you're going for is admirable- I like it. But I would've mixed some epoxy and blackened it and smeared it into those huge pores. Done right it wouldn't involve any more labor/time than has been spent on this technique, would look the same, and would never wash out or shrink.
