This is my impressions using the doubleshot in different situations, and a review of the accessories I got for it.
I got the doubleshot to replace my wizzy 10. At first, I liked the mid-forward sound of the Wizzy because it was so easy to hear my intonation, but that quality eventually started grating on me. Then I bought an upshot. I like the sound and the unique soundstage the upshot delivers, but it is limited in volume. Many of my jobs include drummers, and the upshot did not have enough headroom, or punch to handle those properly. That said, the upshot would be my preferred choice with a piano duo.
The doubleshot seems to be the "sweet spot" of good volume and punch with lovely balanced sound. I have found my replacement for the wizzy 10, and anticipate that I will use it on most of my jobs.
The accessories I bought for it were the Gator 1210 tom bag, and the On Stage RS7500 amp stand. The tom bag fits a little tightly, and could be a bit more padded, but overall works fine. The stand works fine too, but I don't think I will use it much. The speaker is designed to sit on the floor and utilize the bass coupling with the floor, and it adds a lot to the efficiency. When I land on a "stage from hell" I will use the amp stand, but my default will be to place it on the floor.
I have used it with upright/full circle, electric bass, and one job with a latin band where I play upright with a magnetic pickup, and the doubleshot did fine with all.
Best, All Three