Calais to Meiringen-which route?

[Benzinaio]

Road trip to Lake Bled upcoming in June.
First time on the Eurostar as Ferries don't go as early on a Sunday.
To save Googling, Meiringen is fairly close to Interlaken.
Have done several road trips to Italy and this invariably means the Reims-Nancy route.
My question is this.
Who has done Switzerland via Belgium and Luxembourg, then heading south to Basel?
It adds about an hour but I fancy shaking things up a bit.
Worth it or not?
Regards,
Jay.

[stogbandard]

We went to Switzerland through Belgium to Luxembourg and then via the A31, N57 & D64. It was longer but a nice route. Getting into France early meant that skirting around the Brussels R0 was a breeze. The alternative is to head across to the E411 via Lille and Mons to Namur.