I'm kinda obsessed with iriminage, so how do you think we should do iriminage? The uke and nage, of course
Not that you asked me, but this is how i try to perform irminage and the corresponding ukemi. The throw and ukemi are not pretty by most aikikai aikido standards. But it's an effective throw (aka no aiki dancing) and the ukemi is very practical and necessary as to not have your head removed from your body or jaw broken.
Make sure to watch the entire video If you want to see some great Ikkyo ukemi.