The hand gets a sharper glance down in the sort of suspicion that might come about if you didn't know what a handshake was. But Lucius does, and so, he swaps cane into the other hand and accepts the physical act of truce. If only for the, you know, novelty of it. He wouldn't admit that there is something strangely assuring to it it as well, beyond relaxing just a fraction.

He raises an eyebrow, as if to say; If we must.

"A toast, then, to your second chance at acclimation?" he asks, once the shake gesture is done, pulling out the opposite chair and, once seated, drawing empty wine glass closer to himself. He probably isn't actually going to raise his glass; he'll leave the literal actions of affect to Severus to initiate.