I'm on symprove too! Not cheap but cheaper than Vsl. Just do the recurring 12 week deal. After the first 12 weeks you drop to maintenance dose which is 50% so the 12 week pack lasts 24 weeks! It's about £160 in the UK. The only problem with this is it does have a shelf life ( and takes up fridge space) so you get symprove too send you the first 8 week batch, and call them when running low for the remaining 4 weeks!
It's not been tested for use with JPouch though (only vsl has) but it's been proven to have good viability and to reach the gut with good survival rate so can't personally see any reason it wouldn't work. On standard subjects is proven to be one of the better ones. It's not as time critical either, you drink it 10 mins before you eat breakfast, but it will survive in the stomach for over an hour (powered tablets are not this forgiving)
Symprove state that because it's a live probiotic (in liquid form) it's much better than freeze dried powered probiotic that require stomach acid to wake up. In powered form the buffer to protect the bacteria can either be too effective (meaning the probiotic isn't fully activated) or not effective enough (meaning the probiotic element is killed by stomach acid)
Previously i took biokult but with hindsight that was probably a waste of money. I think modern tests have shown it's bio survivability is poor and the stomach acid kills it off! I think the live yogurts have been proven to be more effective than most freeze dried probiotics.
I can't say for sure that symprove works, i guess only continued good health with support that, but I've only been on it 6 months so too soon to tell! I can say I'm making good progress and docs very happy.
I don't work or profit from symprove in any way, and if i could afford it i would probably take Vsl as that is what hospitals in UK prescribe for pouchitis ( if your lucky). But I've learned a lot from symprove and researching probiotics. By all means do you own research but it seems a good one to consider. Rest assured of it fails me this board will know about it lol