Long story short here, I now own a switch 810, and am using a 420mm radiator up top (XSPC EX420). Like everyone else I had to drill up top to get the radiator mounts to match up, but messed up a bit. I gave them a call today and asked them about if it's possible to order a new one, and they said that it isn't possible currently. They did say, however, if enough interest is shown they would consider offering the part as well as offering a top with spacing to fit other 420mm radiators (not just HWLabs offerings). So everyone please please please consider spending 5 minutes to send an email to Sales@nzxt.com telling them you'd like to see them offer a new chassy top that provides spacing for other radiators! This would mean people would no longer have to drill themselves, and make everyone a happier camper . I'm also going to be emailing them a link to this thread so voice your support here as well the more of you that post/email the more likely we'll be to get these new tops!
Also something paritcularly interesting was that the sales representative also stated that something "new" was coming soon regarding the Switch/possibly a new version of the case, but when probed he wouldn't tell me anything else.