I think that these are a must for rec ball. Here you are, in full camo, with everything covered, and you have glare shining off your mask lens. These goggle skinz take care of any glare, and although they are different, you get used to them quickly. I don't even notice mine anymore. It really is like looking out of a screen door.
The only downside to these I have found is that is nearly impossible to use a scope while you are wearing them. The odd angle you have to look out of your mask to see through a scope is too much to be able to see out of the skinz.
I use skinz as a rule now, and have never had any problems with being able to see, or with them being too dark. My prefered combination is a set of amber lenses, and the goggle skinz. When cleaning them, you do need plenty of water, and you have to pad them dry instead of wiping them. The price is right, and they are very intimidating. Most of the crew I play with uses them, and the only complaint I have heard is that point-blank shots to the goggle will tear them.
$12 isn't that much to pay for something that will help you to hide so much better, and if you don't like it, you can always take it off.
They are very unique and break up the profile of your mask lens as well as stop the glare on sunny days. They can be custom ordered and made to your design.
A few friends as well as myself puchased a pair of them. They are ok for hyper or concept ball, but they distort vision (looks like a screen door). They are totally useless in rec ball, it is difficult to see and a real pain to clean off.
Personally i would spend a few extra bucks and get a mirrored thermal lens, they are much better for tourneys. If your looking for something for rec, invest in goggleflage, they really break up your mask and help to blend.
This stuff does break up the goggle shine/silohette that gives you away in the brush/foliage. It also cuts down on glare, and is not very difficult to apply. They also have some outrageous patterns available if you want to stand out more. You do get used to the "screen door" effect if you leave them on for five or ten minutes. You can get your team name or sponsor on them.
Makes cleaning after a "gogg" shot a little harder. They do cut down on visability some, especially on overcast day, dark woods, or rainy days. They also catch snow and allow it to kinda stick and build up some, not a problem for most players I'm sure. The louder styles will make you stand out in brush, rather than blend in.
I'd say they were worth the asking price. I don't think there is anything out there quite like them. I would not put them on my primary goggles unless you play somewhere that has sun 90%% of the time. I would reccommend them, and people get quite a kick out of them when they see them!