It's JellyWOman tyStyles Bitchley wrote:
Close Jellyman, but no Montecristo. That one has the kangaroo pocket, but the pockets on Magnum's are fitted into the seam at the side of the shirt. Sort of like jacket pockets, rather than one long front pocket. It's a real weird one.

There are actually at least two different styles of rugby jerseys with pockets that magnum wears.
This style as Pahonu mentioned,
http://magnum-mania.com/images/2_12_n.jpg (sry don't know how to add picture)
and the one with the sorta concealed pockets you mentioned.
I reckon the OP is talking about the former as it's more like your typical hooded jumper pocket, yeah? Though I don't know if I've seen it in purple, but pretty sure he wore the pink one in The Return of Luther Gillis as mentioned by the OP. The one I found is about as close to the pink one as you'll get these days, close enough for me anyway... now just to find it for sale *sigh*