Here are my answers to your questions.
The ejaculation is messier than before, but typically just between my thighs and really not that bad. I will often keep my underwear on & just pulled down some from my waist to catch it. No big deal in my mind.
Never had a UTI since the procedure and I am sure my wiping technique is not always the recommended approach.
Flow has been consistent since the surgery at around 32ml/sec (way, way better than I ever had before).
I am not sure of the exact method used, but it is supposed to be a lifetime fix. Plan is to have 5 followups at one year intervals and then be done.
There was nothing done to block the flow into the penile urethra, but this has been a non-issue as well. Occasionally I may have a drop of urine come from the tip but it has not been a problem at all.
Hope this helps and good luck. I would have done it years earlier if I had known it was an option (especially after knowing how it turned out).