You can heal the dryad allured things with the healing skill. Magery is faster and easier.
Fey or imps make pretty good backup attackers, but will die every time they're hit. It's a challenge to keep them alive and attacking. On the other hand, you can always summon more. The spell doesn't take too long to cast. Nature's furies make better support.
If you're thinking about putting SW on a warrior, there are some other considerations as well, such as immolate weapon costs a lot of mana and isn't that effective. Thunderstorm, essence of wind and word of death are also huge mana hogs. Without meditation and mana reduction items, they aren't really worth casting either.
There are a couple of spells that are wonderful for a warrior, such as attunement and renewal, but they're very low level spells that can be cast with a low level of spellweaving. On the other hand, at 40-50 weaving, it's pretty rough to find someone to make a focus with.
When I tried making a warrior/weaver on TC, I couldn't fit weaving into the template. I eventually gave up as there are MUCH better skills for the warrior than weaving.