A blocked ikkyo carried through in proper irimi is called "koshinage" and is excellent training also --
You're preaching to the choir brother! However, we were discussing sincere attacks - and to further elaborate - this guy can be a real stinker. During kihon waza he blocks the one way of the one technique we are allowed to train at the time. Sensei comes over - delivers a lecture and makes the insincere uke feel good because he made you look silly.
His loss - I try not to train with him. I do like to train with a guy who is rather large, formerly clumsy, and very very strong. He is honest. I have to be careful not to hurt him or myself when we train as he is extremely stubborn about losing his balance. However - his goal is to attack and learn aikido sincerely, not satisfy petty ego needs.