theres a couple of super detailed reviews of pipe cleaners in this thread
https://newschoolers.com/web/forums/readthread/thread_id/443613/
For example:
The newer pipe cleaners have the same edge as all Armada par skis. I
have owned AR5s, tried Ar6s, and own Pipe Cleaners. The PCs are by far
my favorite skis.
To the op: I have Pipe Cleaners and they are such a fun ski, I have
them mounted at -5 which is the factory line. I skied them about a
month before I hit a rail with them because they are such a dope all
mountain ski. I do rails with them all the time and other than the
expected dull edges they are absolutely fine. With them not centered
they are so sick on fast groomers and slashing through zipper lines but
still perform fine in the park. The race base is sweet. I like to take
care of my skis (keep my base smooth, wax every 2 weeks or so) and
these skis are so much faster than my friends. For example I was just
at a mountain with a 3 jump line and everyone was skipping the first
jump to keep speed for the bottom 2 and barely clearing the 3rd jump. I
was hitting all jump and getting into the sweetspots. When I skipped
the first jump I sent a 1080 into the flats of the bottom jump /claim
haha.
They are fairly stiff for park but I weigh 195 lbs so that is a
good amount of weight for someone like myself. Next year if my Pipe
Cleaners are pretty thrashed I am thinking about the Alpha 1s just
because I have cruised the park a little on my Caylors and it seems
like a skinny lightweight rockered park ski could be real fun.
Hope that helped, if you have more questions feel free to PM me.		
and...
Pipecleaners:
I personally love them.  I have the 181s mounted 1 cm back from center
with FKS bindings.  They are quick, they are responsive, they blow
through shit snow pretty well, and they SLAY the park and rails IMO.
Im 6'0 and 150 lbs so i cant really butter them but i still love how
fast they are.  I have had the OG pipe cleaners for a little more than
a year and after a full year of railing, i got my first edge crack this
last weekend.  Also i just got my first core shot.
The topsheet chips, yes.  Its cosmetic so i got over it quick.  Skis do
that, especially with the abuse that i give them.  Pipe cleaners slay
all mountain conditions (minus pow, i hate these things in pow.  Thats
why i got 09 JJ's).  They rock the bumps and kill the tight trees.  I
take them up the ridge at bridger bowl and the headwaters at moonlight
basin often.  In other words these things handle tight, steep chutes.
I wish i could butter them, but at the same time if i could butter
them, then they wouldnt have the same all mountain performance so im
glad i cant butter them.
granted I WEIGH NOTHING so a heavier NSer might do more damage to the
base/ edge on rails than i do but these are super durable.  Also these
things are poppy as hell, super stable at fast speed, and can hold an
edge in all conditions switch or forward.  In other words, if i could
have two skis, id have pipe cleaners for EVERY type of condition under
3 inches (corn, crud, ice, groomers, soft post-pow days) and JJs for
anything over 3 inches.
Any more questions feel free to PM me