Mavin bino lens filters?

[deer310sg]

Those that have used these filters. Are the worth the investment?
Will be using a marsupial harness. Do they get scuffed up being at end of obj lenses?

 

[MT_Wyatt]

Those that have used these filters. Are the worth the investment?
Will be using a marsupial harness. Do they get scuffed up being at end of obj lenses?

I’ve had good luck with them. Mine never got scuffed in a marsupial or FHF.