Fair enough. Although on the subject of the opponent only having 1 attack each, it means you've won that combat anyway, nothing with 1 attack each stands a chance against Wyches.
It really depends on how many you manage to get into base contact with in that game. If it's a lot, then they were worth it, if it's only a couple, you only stopped a couple of attacks and they weren't. As I said though, with Initiative order pile-in introduced, there's a good chance you'll get to put them in good positions.