Ive never been on any server other than pvp servers and I really think you are worrying too much. Ive been held up maybe 2-3 times by gankers from 1-80. On those times it was good for me anyway because it gave me 5-10 mins to make a drink and research quests I should be doing. You wont have any problem with same level players but I would suggest being a carebear and not ganking people because chances are they will go get their mains and cause u problems. Once you get to about 75 you should be able to kill most level 80 players if they try to gank you. Id suggest just getting on with your leveling then if you find yourself having a problem with gankers at a later level then consider transfering then