The sportive will take full length SKS Chromoplast guards.
I had some fitted to mine in the winter.
There are threaded guard/rack mounts above the rear wheel dropouts, there are no threaded rack mounts on the seat stays for an upper mount.
I managed (just) to fit a full length SKS front guard to a standard PX carbon fork. I bought my sportive before they had sourced the mudguard compatable fork, but though the clearances are not great (23 Ultremo tyre) they are good enough.
There is plenty of rear clearance for a bigger tyre, not so much on my front fork, but the current forks used for the Sportive are more suited.
Never felt a need for a fatter tyre though as the frame/fork combo is very comfy as is, and is stiff for climbs.