Thinking about getting a catch can, but was wondering how much oil you guys are actually accumulating in them? Does it seem worth it?

I ask because I just installed my zzp intake tube today and found a good amount of oil residue at he bottom of the stock tube and in the turbo inlet. Also just recently had a gms1 sensor replaced by the dealer due to the sensor being "bad" so they say. Only have had gms1 for about 4k miles. Don't think oil residue would kill the sensor that fast.