Outofsight,
6 weeks sounds like a pretty good deal.
I have a relative who flies 757/767 for Delta airlines as an FO - I believe his vacation allotment is 2-3 weeks in his 3rd year with the company. That certainly does not compare well with the European airlines. On the plus side, he will make $100,000+ by next year as an FO on the same aircraft (does not include back-pay with the impending new contract).
Given that he rarely flies more than 15-16 days per month, he can call the remainder of days in the month his "vacation days." He is no longer on reserve. Sounds like a good deal to me...