Did Clytemnestra last November. The "safe" (relatively speaking) route is somewhat marked/cairned and in sections padded from the SW corner of Frenchmans, the drop down to the tarn is certainly steep and a bit scrubby in areas but not in the realms of rock climbing/serious scrambling you'll face trying to get down off the southern face... or potentially dangerous routes under the northern face. If you're heading down something that seems totally sketchy, you've dropped down too soon. Refer to Louise Fairfax/Nature Lover Walks' trip report details.
Personally I think there's a way to cut out the time and energy consuming drop all the way down to the tarn and back up onto the main ridge without resorting to any risky rock scrambling, based on what I saw underneath the southern face, but can't say with any confidence. Might get out there this summer with a mate and try.
From the tarn up back up to the connecting ridge and onwards to the summit plateau itself is relatively straightforward, but is a fair trot longer than it appears when you're staring at it from atop Frenchmans. We found ourselves needing pretty much all day from Tahune Hut to get out there and back... dragging yourself back up the SW side of Frenchmans in the late afternoon is tiring
. That was in perfect November weather, clear and warm. In bad weather... yeah, wouldn't recommend it. Be prepared for any weather regardless - it's an elevated and exposed area in a region that rarely knows meteorological stability. I personally wouldn't take anyone with me who wasn't at least a bit experienced in extended off-track adventures, but YMMV.
You're also unlikely to find running/drinkable water past the tarn, so make sure you take plenty.
It is an awesome peak though!
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