Firstly, my first boris was stolen, I then bought another one, that should prove that I like the unit
-Dont you find the long hoses being a problem?
Nope
-Can they be shortened?
Don't know, don't see the need
-Are you happy with the harness that comes with it?
I replaced mine then went back to it, seems ok to me now
-Can you take that off and use a standard backplate with webbing.
Yes, only issue is making holes in wing centre to allow hoses to pass through
-Is it a bad thing that you cant mount bigger onboard tanks?
You need to carry o/b gas by design, you can plug that in and it can feed the ADV/Solenoid, not a problem
-Could it be possible to live far away from the servicecenter (tropical island on the other side of the world) if something starts to malfunction?
If you can afford the postage should be ok 
-Most Borisdivers I have seen have quite a "seahorse style" trim...(yes,Instructors too)..is that something one gets use to or can it be avoided?
Pass, still working on reducing my weighting
- How is it to penetrate with...does it feel bigger (higher)than other competing brands?
TBH I have more often found myself wider rather than higher, I don't see any CCR and stages as a particularly small rig
-Is it more of a "expedition rebreather" than a "swimaround in wrecks" rebreather" Where trim can be sacrificed for more important advantages?
No opinion
-Is the cover tough enough for bumpy speedboatrides and dodgy trollies on crapy piers or are you always worried it will crack?
I only dive off hardboats so not a problem for me. My cover is scratched but not broken yet.
- Have you had problem with any part of the electronics?
Errr..yes..lost all settings once, been ok since
-Do you like the HUD?
Fantastic bit of kit, I had one of Uri's HUD's on my Inspo and loved it, the boris HUD is even more useful
How is it to load the scrubber,travel with and set up for a dive?
I find it very easy to set up, haven't travelled outside UK but certainly no problem within.
Ian