Full disclosure - I haven't played one but based on the Namm videos and Johnny Dibble's recent video reviewing a 5er in this series, as well as the broader hype about Sire, I'd have no worries on quality.
That said, I'd be more alert to whether the form-factor works for you. I have a similar Ibanez EHB 6er and it's probably the multi-scale aspect you need to try to see if it works for you. Particularly, if you like the dusty end for chords and soloing as it is a different experience taking some getting used to. Around the 8-12 fret it's not very different and at the low end, a boon albeit some stretching required.