Re-useable oil filters any experience?

[67XR7]

digging through a goodguys goodie bag from a few weeks ago and found a pamphlet for these folks

http://kandpengineering.com/product-catalog/s15/

I figure this type of stuff hasn't caught on mainly because if you don't clean the re usable very good you could be sending some bad stuff into the motor. Your standard throw away is just that, toss it bad stuff and all.