I sold my SVT and 810 before I turned pro. I consider buying it to be a mistake. It was big, heavy, and not really my sound. For the record, I like SVTs and currently own a 69 and 87, but they are basement queens. I never really cared for the way the 810 sounds, although it works fine for lots of people.
Had a successful career, but was not a big time star. So we had to be our own roadies, truck drivers, etc. When you have a couple of tons of gear to unload and setup every day, you start finding ways to be more efficient. My last touring rig used primarily a 210 pushed by about 250W. I could have used any rig I wanted, and this was my choice.
Ultimately you have to weigh the pros and cons, and make the decision for yourself. Some think gigging with an SVT and 810 is worth the hassle. If you love the sound and are young, strong, and motivated go for it! You only live once.
Way easier to deal with such a big heavy rig on a tour. We typically backed up our cargo truck and unloaded at stage level. Under this circumstance you put the SVT in a big rolling case and it's fairly easy to deal with. Push the amp on stage, take the lids off the case, run power and speaker wires, and you are pretty much ready to rock. It's a bit more of a hassle for gigs in small venues were you travel in your personal vehicle. A pickup or sufficiently large hatchback will work.
Probably best if you have a rolling case for the head. Unfortunately a rolling case will add significant weight. So getting the head out of the vehicle may be challenging. Worst case scenario is if you need to carry your rig up stairs. As long as your bandmates are willing to help you from time to time, you can get it done.