Yeah it was very easy actually. Though fair warning to people who are sensitive to flashing lights: after logging in with DigiD (Netherlands) my screen went full strobe mode. Looked like multiple pages loading in quick succession with different background colours before finally landing on the success screen.

I had the exact opposite experience! I went through a lengthy process of signing up for and activating the weird nonstandard eID that most places don’t accept over the normal one I already have and use for everything, the only one they supported, only to be told I can’t use it without manually contacting the company, have them invalidate my activation and then go into some office to get manually re-activated.