The certs themselves are kinda useless but helpful. The reason the certs are good to have is that if a hall is lookin for stainless welders, the 41 cert will get your foot in the door for a dispatch. I've only had about 5 jobs where they took the certs on face value, but they still shot the first 5 production welds on 3 of those jobs. Other than that, you're gonna be tested at every job you go on. The more certs you have, the better your chances are of gettin a call so do all that you can. The other certs I'd recommend you take are the 63, 61, and 25. The 63 is carbon tig/stick on a 2" .675 coupon. Most contractors are giving this as a gate test nowdays. The 63 is the same thing but is stainless tig/stick. The 25 is carbon tig all the way out on a 2" XXS that qualifies you up to .875" or so. The more you got, the better your chances.