Chromepack is definitely a different color from Natty CXL, it's also twice as thick (chromepack is 10 oz or so, most shoes are made with 5 oz). That said, with wear, the difference will be negligible, since your uppers will experience different wear from the soles. I've been walking around with my Quoddy Dawson's a bit, they've held up to water and salt pretty well. That said, I gave them a coat (uppers and lowers) of neatsfoot and then LP, because I was worried about water damage. I'd say if you think you're going to wear them in wetness at all, it's a good choice.