Only downsides are that you have to remove your air system, and there are that many pockets, it's hard to remember where you have put your gear.
Managed to get enough gear in to play, and maintain a team of ham fisted imbeciles (Team Tremmor) at Simply The Best.
The Dogs as far as I am concerned!!
At the last tournament, I had the following in/on my gear sack:-
1 - pair Spectras
2 - spare lenses
2 - Angels
1 - Angel Air
2 - Revolution Hoppers
1 - Warp feed
2 - Fill rigs
1 - Set Knee/ shin pads
2 - Battle Packs
10 - 140 shot pots
1 - playing trousers
3 - playing tops
As well as miscellaneous spares and tools.
Well worth the price.
Big Ian