Oh man, that was indeed my first thought, one cam, shoot sd, render, go on with my life. BUT, I decided to get some more experience with HD, I plan on shooting EVERYTHING in HD from now on, but rendering to SD if necessary for the project.
I've read about a lot of issues with 24f (24p), both good and bad, then I've read a lot of good things about 30f (30p), does 60i buy me any advantages?

Yes, 60i gives you the highest temporal resolution. There are two schools of thought in wedding videos, use 24p or 30p to give it the "once removed" film-like motion effect or the document the event "as if you were there" using 60i. There are also ways to convert to 30p or 24p after the fact.

Most wedding videographers use 60i so that they can do slow motion effects (which they do a whole lot of). If you don't use 60i, on your highlights piece you're going to have what you shot: an akward guy and a slightly overweight girl. Slow it down a little and put some over the top background music like the theme from Gladiator or something and you'll have exactly what they want: a sort of glorified Hallmarky thing that will make you cringe and the bride and her mother cry...exactly what you want.

Stop fretting over the image and start sweating over the audio!
You can make a watchable wedding video without a video camera using stills, if you've got good audio. If they can't hear those "I do" words you're dead meat.

Bob.

Ohhhhhhhhhhhhh, yes, I learned the audio one a lonnnnnnnnnnnnng time ago, good micing and good back-up micing, and maybe one more back-up mic.
Thanks for all the info y'all, after Sunday, there's no place like home, there's no place like home!
Daryl

I've played with the various settings on the HV20, and I like the output at 60i best. I can always soften it and make a film look, but you can't get resolution back you didn't record. Once I saw how good HD footage looks, I made the decision never to work in SD again, even if it is a relative's wedding you just want to finish. HD converted to SD DVDs looks awesome.

Stop fretting over the image and start sweating over the audio!

I would say that too. In audio I always have my biggest struggels.

/Ulf

Bad Video is almost acceptable with excellent Audio. However, EXCELLENT video is made to look rubbish with BAD audio.

Grazie

OK, it's done! I went with 60i, no problems, pristine audio, superb, my wireless and shotgun worked to perfection I told my wife on the way home, "I have done my last wedding". Anyone who does that for a living, your are a superhuman videographer. It's a tough job but somebodies gotta do it, just not me!
I'd rather produce an instructional video on the varying techniques of fingernails on chalkboards, followed my how best to chew aluminum foil.
Thanks for the input y'all, 60i worked nicely.
Daryl