Absolutely yes. I can think of two very experienced wedding pros on these boards that use the 24-120 f/4 (Mick and the gentleman that has the excellent flash tips blog IIRC). They both speak very highly of it! I'm sure there's others.
I have a 24-70 and 28-105 but I would like to add the 24-120 as a travel lens. I actually don't have a need to go light very often so I'll take my time, but it's on my someday list. Great discussion in this thread guys and I appreciate the post at the bottom comparing the 28-105 to the 24-120. I have been meaning to get down to my dealer to do that test myself.
Self-testing can be a very effective action because, as an alternative to web review sights, if you can see the difference yourself, there is no better authority to trust. I remember doing a Tamron 28-75 to Nikon 24-70 to Nikon 35-70. After that there was no question in my mind I needed to get the 24-70 because I could clearly see the difference in the results even after performing some extreme sharpening in post. So I ended up saving for 6 more months and got the big iron and it has always performed great for me.