I'm going to preface this by saying my experiences with non-noble kavas are limited to Isa. I may have consumed other types of tudei unknowingly during the time, but Isa I knowingly consumed.
If you see an offering of micronized tudei kavas such as isa don't walk, run away. Micronized non-noble kavas are vile in every sense of the term.
It was like normal kava with an extremely heavy body load that lasted into the next day.
The good? Well, I thought I was getting more for my money.
The bad? I wasn't. I was paying to have my skin flake off and be nauseous for 12 hours.
Would I ever do it again? No. With all the amazing noble kavas available I have no desire or need to dip my toe into the non-nobles ever again.