Since there seems to be some other interest, I'll post what I originally PM'd to anghockey:
My husband and I are both military. My squadron spouses club was never particularly welcoming, but also not unfriendly to him. Most of the activities they had while I was gone (bunco, movie night) really didn't appeal to him anyway. The wives in his own squadron, however, were very sympathetic and invited him over for dinner now and then and even pooled together for an "over the hump" (halfway through deployment) present. It really just depends on the group. All the family groups are supposed to be "spouses clubs" or as we move toward the Army way of doing things, "Family Readiness Groups," so he should never be excluded. Alas, most of the groups are predominantly female. Outside of the more informal groups, Chaplains and Fleet and Family Services are actually pretty good providing support for guys, too.
Each squadron and each group of spouses is going to be different. Just like a new CO checks in and the squadron culture changes, so does the spouses club. Having kids or not didn't seem to matter, I personally got along better with the other wives who worked. As far as my squadron-mates wives- some of them (also those who had their own careers and lives) became good friends of mine. Others were nice enough, but seemed to always be looking at me like, "you slept with my husband on deployment, didnt you?" (Lady, if you saw your sweaty, smelly husband on deployment, you wouldn't sleep with him either)
Incidentally, the original purpose of "Officers' Wives Clubs" was NOT support. Most charters for groups list them as charitable/social groups. The purpose being to do good out in the community and show you were good citizens while the menfolk fight the war. Social events (fund raisers, etc) happened in this effort, and support came out of this, but was not the original intent. Some charters have changed and no longer define the group as a charitiable organization, but in theory they should find less official support from the squadron if they exists purely as a social group.