Thanks all for participating. Just about what I figured; a close vote between pass and transfer. Echoed my schizoid thinking at the table. Inviting game is silly.
I transferred to 2
♦. At this vulnerability, I was quietly hoping they'd balance with 2 of a major which I would saw off.
Pard held:
But: diamonds didn't break. Opponents banged down the AK
♠ and ducked their A
♥ later. +130 was a nice score. At least +120 is available is they don't find the club lead in NT. If they do, +90 is about the limit. If diamonds are splitting, obviously this hand makes +150 or +400.
At other tables the bidding started 1
♠ - 1N - 2
♦ - 3
♦...now some passed and some probed for 3N which they played (-50 or -100).
I think the actual hand is an unusual layout. Give partner a more typical: KJxx, Axx, Kx, Qxxx, and diamonds is a big winner.
By the way, I think transferring to diamonds is absolutely clear at IMPs.