Just tried the nostr:npub12ctjk5lhxp6sks8x83gpk9sx3hvk5fz70uz4ze6uplkfs9lwjmsq2rc5ky “push tx” feature with the Coldcard Q, and it’s a banger. You just need a VPN to use this as you are not broadcasting through your own node, but it makes the signing in airgaped mode much more seamless
For txs where privacy is not life and death matter it’s perfect.