Thank you for detailing your experience. You rightly say that that another man may have a different experience to you in certain respects but broadly speaking I think most men would find it similar in most respects and less taxing than they anticipated. In my case I had no leakage of blood or urine. I was uncomfortable, particularly a day or two after the procedure when the bruising became more evident for a few days. During this time I slept in an armchair with adjustable fold down back which helped. About a week after the HIFU my GP removed the catheter and I immediately felt much more comfortable. As you say, only the tumour was removed that was really thought necessary and should another develop to the extent that it should be treated, further HIFU can be delivered, assuming it can be reached with the wand and focused on and that there is not too much calcification.
A few years ago there was a risk of a fistula developing but with improvements in techniques this is now a very rare possibility. In fact the lady surgeon who did my procedure and had done hundreds of others had not had a patient of her's develop one.
So for now all seems to be promising. We should be very interested to learn how things go for you.