That's a shame that he hates them. I think, if he plays with the beads, he doesn't really hate them anymore. Just doesn't think they fit the ideal of beauty. But as long as he's ok with you having them, that's all that matters. He's thinking about yourhappiness.
The only maintenance I do to mine is using that locking gel from dreadlockshampoo.com. I'm getting married in June. So I was thinking that if I could do anything for the new babies growing in on top of my head, I'd do it. Mainly for the pictures. I just want them to be a little more tamed. Just enough to get them out of the way and not stick up like devil horns.
Once the wedding is over, I'll give up on the gel.
As for washing. If you rinse really well before using shampoo, I'd think you could use a normal soap like Dr. B's or dreadlockshampoo. If you're using dreadlockshampoo stuff, I'd worry a little about the liquid stuff because one of the ingredients is beer. The chemical makeup of beer might react with the chlorine. The bars don't have beer in them, so I'd think they'd be safe to use. Just rinse for a little while before you add the soap. And if you normally use sea salt in your wash, skip it for the next wash or 2