I have a large 145 with a piggyback shock, and couldn’t fit a bottle in, so ordered this: http://www.ebay.co.uk/itm/151125545013?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Bottle cage adaptor which moves the cage enough to fit a 500ml bottle easily, and just about fits a 750ml but it rests against the shock so i think i’ll stick with the 500 to save scratching the shock. With a side loading cage or perhaps a 600ml bottle you could probably get away with it, and that adaptor is pretty decent.
Apart from the bottle cage bolts the bike is absolutely flawless! Added bonus I discovered for extra Enduro points is that there is a hole in the frame above the BB, and from the non driveside I can fit a Topeak Mini 9 multitool absolutely perfectly in it, and as the tool comes in a neoprene case there is no movement and it is very secure! Happy coincidence and a cool detail if (like me) you don’t like carrying things on your person!