* New UBS CEO a straight talker and stickler for detail

* Takes charge just after shares hit all-time low

* Track record at Credit Suisse inspires confidence

* Admits mending UBS's reputation will take time

By Sam Cage and Albert Schmieder

ZURICH, Feb 26 (Reuters) - New UBS (UBSN.VX: Quote, Profile, Research) (UBS.N: Quote, Profile, Research) Chief Executive Oswald Gruebel has seen it all before, but even this banking veteran of four decades' experience concedes these are extraordinary times.

'Ossie' Gruebel takes the reins just days after the battered Swiss bank's shares hit an all-time low and as fallout from a widening U.S. tax fraud investigation prompts soul-searching about the best way forward for Switzerland's wealth management industry.

But his track record of reversing multi-billion-dollar losses at rival Credit Suisse (CSGN.VX: Quote, Profile, Research), as well as his reputation as a straight talker and stickler for detail, inspire much-needed confidence. [ID:nLQ256541]