I sent my forks and Penske to Konflict for springs, valving & SKF seals. Stock seals were weaping in the first month, they’re notoriously poor no matter how much internet mumbling about cleaning them goes on.
I have a 2015 bought new late 2016. No forks covers. went all the way up the Dalton in June 2017. Came back with a fork seal leaking. Warranty covered. I am going to put sox on for the BDR. seems like cheap insurance.
I believe 90% of the various guards you can buy are pointless expense.
I have been off-roading my 2014es for 4 years, its been dropped and crashed more times than I can remember and even dragged around while lying on its side to get it in to a better position to pick back up.
I have Altrider skid plate, crash bars and rear pannier racks and they have ben enough to protect the bike from damage in every fall.
Back to the original question about the fork guards my lower fork legs still look brand new and I don't have anything fitted.
Ok, I put them on and they do look great. Can't test them because it's January in Vermont, Really beefs up the front end though. The Altrider universal heal guard is a nice add on too. The Touratec quick release headlight guard is my favorite farkle , although, I'm not totally sure it's legal in Vermont.