Hi Benerkens,
That’s great it works out of the box with the standard driver. I am also Dutch, so will also go for the cheapest option 
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The GU10 (400 lumen) costs €7,- at IKEA and the E27 (1000 lumen) costs €10,- . Not sure of 400 lumen is enough for a ceiling light, so I may go for the E27.
Do you also have experience with the IKEA power outlet? I wonder if it also can be used as an extender Xiaomi Aquara devices. As it is also 10 euro it might be a better option. I saw this topic but the answer is not there yet.
Nico