I had knotty looking varicose veins on one leg… largely ignored them until they started getting itchy - the eczema you talk about.
I researched all the options you spoke of and ended up going for Venaseal. The surgeon explained the outcomes for Venaseal were similar to other options but I was swayed by the fact that he could do the procedure in his offices without anaesthesia etc. and also that I’d be able to train at the usual intensity the next day.
Around 3 months after surgery all swelling etc disappeared and the leg looked and felt totally normal.
Not a total cakewalk… during the 5 or 6 weeks following the procedure I had weird little lumps appear up and down the leg… as well as some aches. Nothing that ever stopped me training but I needed to take NSAIDs to keep it under control - which I don’t normally do. Also, had to wear full-leg compression for the first week or two.
All up - totally recommend and I’ll get it again if / when the other leg plays up.
Final note - when I was asking the surgeon if sports performance would somehow suffer if I had one less vein moving blood around… his answer was that that incompetent vein was actually a net negative and circulation would improve overall when other deeper veins picked up the workload. Free watts?