Lot's of the females in my surgical residency wear actual compression stockings, I have some smartwool socks that have some compression built in. I can feel the difference, especially if standing for long periods or after a 24.
It's a great idea for the reasons you've suggested above as well as the fact that your legs and feet just feel better after wearing them.
Go to www.discountsurgical.com for the best prices in my opinion and widest selection. I have been happy with the Jobst and Sigvaris brands. I preferred the black ones because they look less like support hose then the tan ones do.
I wear running socks that have compression and built in arch support and the works. Same socks I use when running marathons. I noticed when I started using them my feet and legs weren't as achy after a 12 hour day