In reply to Rick Asher:
Are they planning to do the whole SI TA? Or just a section/bits?
For the former, yes it’s very early and probably setting up to fail. It’s essentially still winter here then, likely snow on the tops/passes, muddy, wet, cold elsewhere. High risk getting stuck at the big river crossings with a thaw melt etc.
Weather here highly variable so could potentially get anything Sept.
I do occasionally tramp that time of year, but will choose location and weather breaks, and more likely valley/low walks. I’m usually more likely to be ski touring in Sept.