I can swing a 15 lb mace pretty easily and do multiple reps on both sides. I can handle a 20 lb mace on both sides if I’m not fatigued or too distractible to mind my form. I can do one-handed swings with a 10 lb mace.
For comparison, in July I could barely swing a 10 pounder with two hands and I nearly fucked myself up in August trying to swing a 15. It took a while to work up to swinging with my left hand (the weaker one) on the bottom because of the strength disparity between the sides.
My next goal is to earn the L1 Tacfit certification next month.
I use OdoBan on mine. I put a cup of it in the washing machine when I load my clothes in. It seems to help. For nasty odors, I'll pretreat with it.
I've also had some luck with Cupridyne (which is marked up and sold here as Pooph!, if any of you have seen the infomercials). It's great at getting rid of intractable odors, but it seems to take a LOT to make a noticeable difference.