Not sure about the brand you mention, but in my case I have purchased three different but low cost (so read low quality perhaps) I/R filters from FleaBay, and all seem to work just fine.
Cheap I/R filter in front of my Leica lens? Yes, but whether it degrades it noticeably or not is a guess at the moment.
Just get one and try it, not much money to spend to find out.
Gary