installing multuple distributions

<posted & mailed>

I would like to test several distributions (say
kubuntu,mandriva,suse,arklinux) without changing my working place, when
switching from one to the other. 
So / /boot /usr /var of each distribution should be on the same partition,
while the /home partition should be shared among all.
Do you think that share /home would give rise to any inconsistencies?

Probably i should make sure that /etc/passwd and /etc/groups are the same in
all distributions.
Do you think it would work?

Thank you
Pol