https://www.youtube.com/watch?v=UqbLsRkHpjQ
Thanks everybody, here's a clip I just uploaded of the bass solo from Verdi's Otello. Apologies for the audio quality, this was done on short notice to submit to the VSA. To @Shelbow, yes this is now my main instrument. Compared to my previous bass, an 1895 prague bass, this is gutsy and very resonant, particularly in the low to mid range. It tapers off a little in thumb position but that may change as the bass opens up more. It's got a wolf on the octave A I need to sort out but first impressions are very positive.