I would have slightly less consideration for a regional than a major.

But either way it's not really about consideration for the company...it's about consideration for your fellow service members and our collective reputation. If everybody makes a habit of bailing shortly after training, then they might as well not hire military guys unless they know they'll stick around (ie retired AD). There are already plenty of civilian pilots who think we all drop mil leave at our personal convenience (first year, holidays, etc) so we can just sit around the office, watch ball games, and go home at 1600 while they fly weekends and holidays for us out of seniority.

Do what you have to do, but if it can wait a year it would better for all of us...including you at your next job.

If it's mandatory deployment or a big opportunity like upgrade, command, etc hell yes go do it.