The reverbs sound good!
And so do other things. Something that stands out is the slow harmonic language and how fluid it is when it changes. Something that's difficult to achieve with a slower pace.
It seems like the piece is too short for the amount of material you put into it. It feels like there were too many ideas for its length, which is also good because it means that it has a lot of potential. There wasn't a lot tying it together, though the instrumentation and tonal centers at the beginning and end helped. The pared down instrumentations in these sections sounded very nice. Ugh, I just wish this piece were longer!
Anyway, good job!
Really good. I defintely take your compliment as that of stonecutter to stonecutter, and not mongo appreciation day.