Man of Honour
I'm doing the inverse. I also want to do a Triathlon but I've started with running and I'm slowly adding swimming and cycling. I much prefer runnign to cycling as it stands, although I am initially concentrating more on swimming than cycling.
Swimming is interesting because it is so much about technique, not fitness. I've been swimming once or twice a week for a year and made some small improvements but I never fail to see some OAP or overweight middle-aged women charge passed me. Very frustrating when i know they will be collapsing less than 1 miles into a run at my easiest running pace! Cycling and runnign are very linear in comparison - you put the time in the saddle/runnign shoes and you get better. It took me about 1 year of dedicated running to get a 3:13 marathon time and come in the top 7% of finishers. When you are tired runnign or cycling you can just keep on pushing yourself and you reap great benefits in endurance (if you allow proper recovery). In swimming if you get tired then your technique gets all sloppy and you end up learning bad habits that gets reinforced into muscle memory. So I have a love-hate relationship with swimming.
Yeah, I've heard similar from experienced swimmers. Technique is something I will certainly lack so I'll probably bite the bullet and get lessons/coaching for that when I finally get round to it.