Will I get lucky.....

In my opinion, they will absolutely give you an error 'bulb out'

if would need a warning like this:
European vehicles and daytime running light applications may require LED DRL Decoders or Error Free Decoder Wiring Kit to prevent any error messages or flickering issues

Yep, you'll need cancellors...

I recently found an alternative to the typical aluminium type ones that get really hot and had them wired up to a set of led H7 headlights with built in fans for 30 mins or so and they didn't heat up hardly at all ...

2pcs H7 LED DRL Canbus Bulbs Error Warning Canceller Load Resistor DecoderDC 12V | eBay

I've had to resolder the wiring on the aluminium ones I have, more than once due to the heat the produce....