Seems to me it's apples and horses at this time. Can't even get a good fruit salad out of that combo!
Mosspa is equating his/her nic intake at 45 to smoking on a "puff per puff" analysis. And has specifically stated also that he/she is vaping for the benefits of nic, not to quit smoking. And has said that to get the same nic, on a puff per puff basis, into the blood, that's what it takes.
Many (most?) of us here are vaping to not smoke, and are probably more "addicted" to the process (and the other crud in cigs!) than to the nic.
Personally, I don't vape 8 -10 draws 8 - 10 times daily. I vape frequently, and at a lower percent. Keeps me off cigs. And I vape at 18, with no particular desire to go lower. (Or higher, although it did take 24 for me to successfully make the switch.)
And while he/she could well be correct in that analysis, I, personally, have no desire to only vape, briefly, a few times daily. So using 45 mg/ml concentrations, while perhaps "mimicking" the actual nic intake of smoking, has no appeal to me.