Like Jill my orchie was done by a urologist that at the time did SRS as well. He said he'd place the scar where he would make an incision for my SRS when that happened so no biggie. I'm not able to use him for SRS now but I am still able to get it so I don't see as it stopped me in that regard.
Libido, I didn't care much for sex before the orchie and I still don't. Does it still work as it did before? Yes. I had a female friend who made it her mission in life to see if it would work and eventually with huge amounts of patience she succeeded but I'm not saying I enjoyed it as much because I wasn't fussed either way if it worked or not.
Complications are specific to the individual. Post op I had no pain,

My nurses got upset with me for refusing pain meds.

I had it done under general anesthetic as I lived so far away and my surgeon didn't want me travelling home alone the same day so did it that way so I needed an overnight. I did get an infection but I have to take some blame there. Living alone with no help I did too much lifting and moving about as I had nobody to do it for me, I was also set a goal of weight loss and embarked on exercising way too soon, The stitches gave way some and I got an infection that nearly caused me to be readmitted to open the wound fully and let it heal before restitching but super strong anti biotics cured it enough to stop my GP sending me back. Overall I don't regret the orchie as I don't need anti androgens, I have less bulge and I am allot happier emotionally.
Hope that helps some
Sorcha