If you continue as a RP, I think you'll come under the RSM
group. If so, it's a combat appointment but "luckily" he should
have a vehicle, so field training's gonna be hectic but not
humdrum-siong like infantry.
At least that's what the RP's do in my Arty (not Armour) BN, when a
lot of them were posted in "blur" from other vocations/formations
too. Don't recall them attending any conversion course either,
certainly not together with the ICT schedule - they inprocessed
together with the main body.
Also, you didn't clarify this, but I think you could be joining a
reservist unit in the midst of their training cycle too. In other
words, they may be old birds to some degree compared to your newbie
status. One of my outfit's RPs faced such a situation with us - I
believe he was an ammo technician or something when "active", &
was 6-7 years younger than the rest of us - but fortunately the RPs
took him under their wing & he learnt very quickly.
Yes, pack all your combat gear in the fullpack, plus your
toiletries & personal stuff in a small civilian bag.