Technically, I believe that judo and aikido could not be more different because they are based on completely different concepts. My previous judo experience has helped me a lot in my aikido progression in the beginning, but it soon became a hindrance when I reached somewhat a higher level.
I wouldn't recommend doing both though. The natural progression would be to start in judo and then move to aikido. Doing the opposite doesn't seem very logical to me.
Can I practice Jujitsu and Aikido at the same time? My sensei teaches both Jujitsu and Aikido. The Jujitsu class is completely self defense. There is randori, but no competition.
Do you think I can do both arts at the same time?