Hi, shorin-ji
Hi, iaibear, no need bite tongue(hurts and big artery there

). I'm sure a consensus of the FA Forums would elevate me from villiage Idiot to simple Idiot (skip the Savante {or is that Savate?})
We all have different experiences to share and by all means Shihan Minoru Oshima was NOT conducting an Iaido class...it was just my experience that Bokken was practiced as kiri, iai form and we also had a Tire holder (messes up the look but...it is just an expensive white oak stick) when Oshima Sensei felt us ready.
After 30ish yrs mostly under Koichi Tohei I know that what Oshima Sensei taught worked, just different that's all; and, of course He was'nt interested in teaching us Iaido, Aikido does have some experienced weapons practicioners much as some Batto schools have excellent Iaido Instructors...
The classes I attended later were also NOT Iaido but Batto-Jitsu, yeah footwork and body angles were different...BUT this would be the 3rd time (or 4th?? been hit in head too much) in a totally diverse style where, not only footwork but approach to the opponent as human and attacker was treated differently.
Maybe that Aikido Instructor was not open to variences in footwoork or hip/shoulder/spine alignment, His or Her loss.
Your good call, polite refusal is better than puttin' on 'airs'. To bite ones tongue from one experience 15 yrs ago... well at least you bite not your thumb at me 'king of cats' for I Romeo am in love with your Juliette.
-Karl. Peace. make kinda sense??