Brompton now sell a £75/€90 seatpost with a very simple extendable combination lock built in. Has anyone tried it or bought one? Is it any good or as silly as it sounds?

Brompton now sell a £75/€90 seatpost with a very simple extendable combination lock built in. Has anyone tried it or bought one? Is it any good or as silly as it sounds?

by JohnPaul_II