A few guys around here have tried Cicer Milkvetch, some in mixes, some in pure stands, and have had mixed results. The best stands seem to be in the light sandy soil - BONUS for us - and one fellow has had great luck with it on his poorest land. It took 4 years to look like a real thick stand of forage he says, but once established, it works great in his MIG system.
As for Galega, it is very hard to find, and very few people seem to know anything about it. The factsheets on it make it sound as hardy and drought tolerant as the Milkvetch, but with higher growth and more yield. Almost sounds too good to be true. I've found a seed dealer who has 1 bag of Galega seed, and they're not even sure how old it is. It was collecting dust in the back of a warehouse.