I joined SEL after about 3 days of starting WGT, at first there was a hell of a lot to take in, but after about 3 months of playing and being a member, my game has improved ten fold, and getting to know the club and their comps is nearly second nature now.
I have seen lots come, complain (usually wind and green speeds) and leave. It's definately not for everyone, I play exclusively on a kindle with a crack in the screen, which obviously does not help my game any, so I still have the occasional abysmal rounds, had a couple today in county comps.
Merion, championship greens, hard pins, 5 putted 1 hole, 4 putted 2 with a chip in between (putted off the green), 1 putt was a little short, stopped, rolled back, past me and 10ft further away than when I started, still scratching my head at that one.
Then the very next comp (I tend to rattle them off, one after the other) high winds but slow green speeds, after just being on championship greens, going to slow messes with your head.
Excellent club, lots of work goes into it, I havnt been a member anywhere else, but I think I would be hard pushed to find a better one.
TL/DR:
If you want it easy to keep your average down and move up tiers, then look elsewhere
If you want one hell of a challenge, think dark souls on acid, then come along and join, it will be a struggle, but it will make you a better player, it has me, even though im still not great, im a lot better than when I started, and learning new things every day.