My wife and i had two rv's that had beds going side to side. Second one reinforced the dislike of the need to crawl in/out over your partner. We always slept with cari on the asile side since she makes more nightly runs than my one-to-none...that said...our current rig, and ANY future rig(s) will have back to front arrangement. so much easier!
For what it's worth, i would do whatever mods one thinks will create a north/south, front/back bed situation.
on the home front...our 38ft 5'ver has more room in its master suite than the Parkliner
from hitch to bumper!