Open the Sirene.
From my experience, it goes from mildly curious to very good after opening and a little time. I was delightfully impressed.
I must concur. At first the grain base kind of put me off, but as that oderiferous sharpness cooled out in days. In the time I've gone through the bottle(not a long time) it has smoothed out considerably smellwise and tastewise as well. Now at less than a third full it's a much smoother product, and in a short time. I will definitely sit†
on my next bottle a bit longer just for science's sake.
I must say I find Roquette and PF 1901 to be not too similar, the 1797 being a much more forwardly complex and medicinal type thing. It's not bad, I actually like the stuff a lot (although I wouln't drink them with each other).... I just am having an interesting time finding a place for a cross between the two on my theoretical palate.
As far as VP, haven't tried it, I guess it will have to be a sample in trade, if I have anything in stock anyone's interested in. I ain't buyin' any more Absinthe for a while. Too damn much money. Any of y'all producers or other holders of precious bottles willing to do some sort of work trade are of course a whole' nother story.... †
And spin, if necessary.