The rules are pretty sophisticated and very original in their mechanics. Nevertheless they are easy to learn, all my players were playing this game for the second time only and I plan to run the game at the convention with no experience required.
Adapting the setting to the rules is not difficult, I have the SOTR rules and I simply pick the elements from the rules and find the best way to adapt them to CoC... Of course SOTR is a very reasonable set of rules as well but Chain of Command is really a different kind of game when it comes to WWII skirmish so that is why I'm using it.
The hedges I bought on one of the past conventions here in Austin from someone selling terrain, I don't remember the company's name, sorry, but they are pretty standard build.
I would certainly recommend these rules, we are using them for WWII, both in 15s and 28s, I'm using them for W-WWII and I hope to use them for Falklands at some point soon..
cheers
Francisco