Hi Andres
Sorry to hear about your husband and that you find your self here. However you'll find lots of help and support. You're right it is all very overwhelming and stressful waiting for results.
Your husbands PSA and gleason score are relatively low, you have time to make a decision in which route you wish to take so don't feel you have to rush it.
I took the HT/RT route in the end, although I was advised both routes by different surgeons which made the choice quite hard.
I think surgery was suggested as I was 48 at diagnosis. however a second surgeon said HT/RT was best. Reason being I was T3b (so seminal vesicle involvement) N0M0 (no bone or lymph node involvement). Being T3b the surgery would be none nerve sparing (the deal breaker for me), and I would most likely have needed salvage RT, so double wammy of side effects.
With surgery you get immediate side effects, which can and generally do improve over time. RT/HT side effects tend to increase as time goes on.
I'm very happy with the choice I made, things still work albeit less enthusiastically due to the HT, but that should improve as the HT wears off.
If my cancer hadn't of progress as far and surgery could have been nerve sparing I reckon I would have taken that route. Both options have very similar rates in terms of cure. In answer to your original question on side effects, as I understand it there are the following.
Surgery:
Incontinence & ED - but can improve over time especially if you are younger/fitter. Some people are dry straight away
HT/RT:
ED can develop over time (years)
whilst on HT - loss of libido (ED), hot sweats, muscle loss, weight gain. How badly you're affected can vary greatly, some really struggle, some get of lightly
Both:
Either route will result in dry orgasms
You should look at Viagra (or similar) and vacuum pumps - both available on the NHS, to avoid penis atrophy whilst the nerves recover after surgery or whilst on HT. Worth asking about a referal to the ED clinic if it's not mentioned.
There's the NHS squeezy app for men for pelvic floor muscle exercise, its only a couple of pounds and can help with incontinence so worth starting that now
Urinary strictures can occur from scaring, I think I was quoted 1/10. This can be treated with medication through to further surgery depending on severity.
I hope all that hasn't worried you further, it seems a bit scary reading it back and I've been through it! However your husband has lots of things going for him, low gleason, low PSA, young fit and healthy, a proactive wife who's seeking out help (not to be under estimated!!)
All the best
John