I am not trying to put a dampener on your idea but i know that their snooker cues have really gone down hill in the last few years. . He relies heavily on his brand name now and global sales. The only good ones that John makes are usually commissioned by the snooker pros such as Ronnie and others.
The rest are made by his team and not really as good as they where. I have visited his shop several times and seen a couple of dozen cues for sale and all were not the best. I also have owned 2 and had 4 of my cues repaired and customized by him and once looked into buying one of his pool cues after seeing Steve Davis use one in the WC several years ago
In terms of his pool cues they are made like a snooker cue by using hand splicing so the construction will be similar to his snooker cues. Moreover, he has not been making pool for for that long - possibly 4 -5 years. Lastly, he mainly has stocks of Ash wood and I am doubtful that his maple would be as well seasoned as many of the cues made in the US. These were some of the factors which deterred me from getting one made as the quality can be a little hit and miss (mind the pun).
In light of this, for the money you are best looking for a cheaper cue made by an experience custom cue maker in the US who has more expertise in the construction and possibly better shaft wood.
Just my two bobs worth. and by no means take just what i say for gospel. See if you can get feedback maybe on the
http://www.pro9.co.uk/html/ forum from people who have owned one.