Of course its doable, but...….
Climbers and mountaineers have proved nearly anything is doable - it all depends on your experience, gear, weather and mountain conditions...…… We climbed in last Friday in very snowy/icy conditions, but had crampons, ice axe and a fair bit of climbing and mountaineering experience under our belt. Saying this the climb was very straight forward and we ended up putting our ice axes away, but found the crampons handy (micro-spikes may have been a little sketchy in the conditions we had - some icy sections).
Having been back on the mainland since Sunday I can't vouch for current conditions. Only kind of steep parts are the bits immediately below the CM/Smithies Pk saddle - west side can be a little sketchy if there is ice on the rocks and the east side has a snow chute which you need to traverse across which can get icy. Photos below (note these are conditions LAST Friday, things may have changed.
Note we had great weather at the time of climbing Cradle Mt – the following day (Saturday) weather conditions climbing Ossa were much worse (blizzard), which made climbing much harder.
- Icy rocks approaching the saddle (west side of CM)
- Looking NE at saddle, snow chute seen bottom centre
- Looking S from Smithies Pk, snow chute seen bottom left
- Nice photo