For what it's worth, XS4ALL has a tremendous reputation when it comes to privacy in The Netherlands, being one of the first ISPs in NL, founded by true hackers. They were the first (and only one?) that started disclosing how many subpoenas they were receiving from the government, have fought a lot against blocking TPB in court, etc -- I'm not surprised at all they are the ones hosting the Tor servers (I am a customer, and am allowed to run an Exit node, and they are very supportive when they receive abuse complaints, their entire customer support staff knows about Tor). I would be surprised if they would easily cave to a government order / seizure of their servers.
I do however have my doubts about KPN...
On the other hand, XS4ALL is always looking for the boundaries of privacy and free speech -- if there is no more (legal) room left, and as such have reached the boundary, I have no doubt they would comply. But they probably make a big stunt out of it again, using it as a marketing opportunity, which KPN, of course, will have no problems with. As long as they comply with the law.
Counterintuitively sometimes the best protection is to operate under another agency. That makes moving against Tor a battle of internal politics rather than a legal battle.
'The government' rarely has uniform views on something as complex as Tor.
Stop.
$ traceroute 128.31.0.39
...
15 mitnet.trantor.csail.mit.edu (18.4.7.65) 40.218 ms 40.661 ms 40.900 ms
16 asperta.helicon.csail.mit.edu (128.30.0.246) 45.345 ms 47.082 ms *
17 belegost.csail.mit.edu (128.31.0.39) 44.074 ms !X 45.023 ms !X 45.549 ms !XI Don't want to believe, if I can trust a Tor Network passing through that gate in MIT