I too have read some studies about salt being re-absorbed into the body. However the articles indicated that some people do and some people don't. None said that all the salt is reabsorbed either.

If you are one that doesn't crust up your clothes with salt, then maybe less of an issue. However sweat is salty no matter what, and I drip a lot of sweat when cycling. Not quite as bad as a horse that's been worked hard, but I do often have a almost steady stream of sweat dripping off of me.