Vanguard Monks

Does anybody know if you can change your style multiple times? Or is it a one shot deal?

Thus far I have not heard of any way to change one's style once it is chosen.  That is not to say that there isn't or that there won't be.  But I nor any person / monk I know has ever found a way to do it.

Iam interested about this subject too. I will reach lvl 15 in a few days , and iam still not very sure about going dragon or harmonius . Its very important choice, even more if it isnt turning back...

Truthfully, I don't think it is that big of a choice right now. I am Harmoniuos. I have grouped with Dragon style monks in small groups. He took aggro when we needed him to have it, I took aggro when we needed me to have it. I tanked better then him mostly. I did not see any appreciable difference probably due to my groups not being AE groups. I truly believe your equipment and play style (solo vs small group vs large group) will have a larger impact on your success/progression as a monk in any style. Always play to your strengths.

I would for now just go with whatever style you think will best suit you, even if the styles arn't balanced at the moment that will allways change with all the patches. I'm pretty sure they wouldnt make you reroll to change styles latter on. changing stlye will most likely be added later on when everyone is high enough level to decide if they really like their choice.

They added a quest in beta that allowed you to switch styles, but we were told that in release you would not be able to switch your styles and that it was a permanent decision.

I am a Kojani Monk
The one who gives you the quest to chose one of the 3 styles is also the one who can help you to choose a new stance if needed

Just acceptet it and its easy to finish.. BUT i wont finish it because im happy with my chosen stance) so i donīt know if you can do it several times or not

you can change your styles.  i have changed once from drunken to harmonious and a fellow monk friend has changed between all 3.  i have no clue as to how many times you can do it but it can be done.  simply make another visit to the master in khal that originally started the quest and he will send you on a path to switch. it requires quite a bit of running around but it is not difficult other then time.