Adding equipment for the proposes of adding gym weight can be a slippery slope; just a warning. I'm not at all against it because there's not much I have not tried. Not sure if you compete or not but for me , most of my PL meets were knee wraps only.
Even if you don't compete, most equipment can be used as an aid in the gym. Once you get use to the different resistance points and a slight change in your grove, they can add a reasonable 10% to your lifts over not having them on This also depending on the style of equipment you choose.
They are great for pushing up "Wrap only" lifts. Trust me, when over time, your body gets acclimated to taking out and moving that 10% more and you go back to wrap only, that weight will feel lighter on the takeout.
Hope this helps