I think you know the answer. Deep down, what do want people to say? "Go for it", or "keep your SLC"?
I bought a 10x42 NL, and while it's an optically brilliant bino, the novelty has already worn off (it's been about 3 weeks). I think it's easy to fall into the trap of thinking that an object will dramatically alter your quality of life, or that minute optical improvements will change the way you go about your birding/hunting/nature watching - whatever.
The NL's are good tools. But they're not magical 'wonder' instruments, either. If you've got the $$ and you feel that the extra features of the NL may contribute to your enjoyment, why not? But I don't think you'd be missing out on much by sticking with your SLC's.
At the end of the day, it's what you view through your binos that counts, isn't it? This forum has been a bit of a negative influence, because instead of enjoying whatever it is I'm looking at, I've been preoccupied with nitpicking the glass instead. And even the NL isn't immune to that. I've been picking holes in it all day long, and it sucks big time.
The grass is always greener. If you think the NL will cure that, then you're wrong.
If you find the SLC to be fantastic, then why change? If your answer to that is "but...." (etc) - then buy the NL's. :0)
Sound advice. The NLs will be on sale for some time to come so you could safely sit out the lust period and you might find as you are continuing to enjoy your fantastic SLCs that in a short while you wonder why you ever were that keen on the new release. I have to say I was invited to try an NL in a shop a month or more back but like you I love the SLC and haven't changed my mind about that since buying it back in the late spring.
I will say the NL I tried was ergonomically brilliant but so to me is the SLC - very much so.
All the best,