Have spotted these boots [[http://www.dunelondon.com/tonic-crossover-strap-detail-leather-knee-high-boot-0089501020020509/?sessionID=35f6c3281f7168c6c0f308eccaeddc85eecc702a]] on sale at Dune. I wanted a classic style brown knee boot but am worried these may look frumpy! What do we think?