I think they look quite smart and are dressy sandals rather than everyday sandals. I agree with @MrsHuntGeneNotJeremyObviously that they would lovely with a nice pedicure.
The teva ones are walking sandals, not stylish for everyday wear. Fine for walk over hills and moors.
What’s your dress style? Is it classic and Parisian? more boho? Retro? This may affect what sandal you end up with.
Fit-flop brand may be worth considering if you want something comfy to walk on in your last few weeks of pregnancy.
Why don’t you save the Hobbs voucher to treat yourself with something new post pregnancy?