the front guard comes with elastic bands that feed through holes and attach to hooks on the underside - so it doesn't matter what shape your diagonal tube is !! full fitting instructions are on the packaging.
Regards

The front guard that goes on the down tube has a groove for a round shaped tube, but the nature of securing it to the frame should give you no problems, providing that the down tube isn't too wide. The guard is secured to the bike with two very strong rubber bands. You may need to give them a little stretch if the down tube doesn't slot nicely into the groove. If your down tube is too wide and is more like a square shape it may not fit in that groove at all, and those bands are quite tight. See the attatched photos.

Yes, Have Claude Butler Explorer with large oval tube, with rubber spacers fits well

Yes, they fit my rockhopper just great.

i used cable ties to secure the front guard to the frame - shouldn't make too much of a difference

I would expect so - the front guard has two o-rings which stratch round the tube.

do not know for sure! but the fittings are like big elastic bands as long as the overall circumference is not that different should be no problem!!

Yes

Yes, I use them for that and its fine after the rain.

i think they would fit any bike .i have them on my xc bike and i still end up with mud on my face

They are more meant for proper mountain biking, but would do the job on a hybrid.

Most certainly

Yes
You can fit the rear mudguard without removing the seat post

Yes

Yes - Took me about 5 min and fitted my post. Same size.

Yes it can the seat post bracket be fitted without removing the post but unsure about fitting a 32.4 diam post

Yes it can, an advantage over the previous model and it comes with 3 thickness ad ons to cater for most seat post diameters

Yes comes with mount for rear guard that fits on seat post and elastic type band for front guard to go around diagnal bar.

pack includes a fully adjustable mount for the rear, and 2 rubber stretchable bands for the front.

Yes, mounts are included and are very easy to fit.

yes everything included

Yes

It uses two heavy duty elastic bands which can be manoeuvred around your cables

Yes easy to fit, but use the right Shim on the rear guard otherwise trick to remove later on as spindle tends to turn around in spline, then come the drilling and tools time.

ihave sirrus elite 2010 and they fit ok

The catcher attaches using 2 pretty strong bands, however, in order for it to remain in place, the portion of your bike facing forward to the ground doesn't have to be circular. Oval wouldn't be a problem.

If you pannier rack incorporates a solid horizontal top plate (carry rack), I would say no, or only have minimal effect as the top plate would be just as effective as a mudguard. My Topeak rack (similar to a Topeak Super Tourist Rear Rack) does the job. I bought a set for the front gaurd only and put the rear on the other half's bike which doest have a rack system.