We could 'what if' this discussion all day, but to answer your question: Do what you have to do, to survive. If you have to clinch, take the guy down and bust his arm, do it. If you clinch, take him down, and choke him out, do it. If you can choke the guy out while standing, do it.
As I've said countless times, and I'll probably say many, many more times...I'm NOT anti BJJ, Judo, Sambo, etc. Multi man attacks aside, if going to the ground is the only/best option, then do it. IMO though, intentionally going there, as in, going there for the sake of it, is crazy. Prolonging your stay on the ground, is crazy. But that's just me. Assess the situation and base your response accordingly.
It's a very legit argument that the current BJJ only training is not the best for street defense, but IMO, it's still a lot better than most of the unrealistic SD training, that claims to be so realistic. And mainly due to the fact that BJJ trains hard and spars hard, every single class. 30-45 minutes of sparring, every class at 80-100% power & intensity is a hell of a lot compared to TMA & SD classes, and will get you excellent strength & conditioning and somewhat, significant fighting mentality. Like DropBear said, if you're getting the crap beaten out of you standing, your best bet is to Grapple. I have a collection of all sorts of fights ranging from streetfights, prison fights, 1 on 1 up to 1 on 5-6, etc. About 700 videos and adding more everyday because I take SD very seriously. People in these videos, who are getting pummeled while standing, will almost always, resort to clinching and wrestling, regardless of whether they're trained for it or not.
If BJJ is all you've got, why shouldn't you use it right away, rather than striking poorly? Against someone untrained, I can easily hip throw them into the cement and on the way down, drop my knee into his face while grabbing an arm and break his arm at the elbows with a standing armlock in 3-5 seconds. Then I move onto the next guy if there's one. Even with a double leg TD, you can get him high enough to slam him down onto the concrete to hurt him pretty badly.
Out of my 700+ real fight videos, only 2-3 resulted in what seemed to be fatalities due to excessive and continual beatings. Then about another 2-3 where someone got KO'ed with 1-2 punches, drops backward and crack their head open on the cement, resulting in a coma or death afterward at the hospital. But most streetfights, or even prison fights....they get stopped by others once someone is KO'ed. Most times, the winner themselves would stop on their own and not continue to pulverize some dude's unconscious body. There's rarely such 10 on 1 scenarios nor fights to the death, as often romanticized by Self Defense people who don't understand BJJ nor MMA, thinking it's just for sport. And I'm not saying you're one of them especially since you also train BJJ.