How common is a segregated signing lightning node setup? Essentially like:

LN->(watch-only LN node)->(Signing LN node /w single gRPC connection)

The watch only having chain data and the signer having a single connection for signing channel states.

Is this necessary to keep Private keys reasonably secure while using Lightning?

Is this how nostr:nprofile1qqs9df4h2deu3aae83fmet5xmrlm4w5l9gdnsy3q2n7dklem7ezmwfcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz3rhwvaz7tekd3jks6rev3ehyargv9nk66tnxe6h2dn5w43kuerk0fmnwcm4vfc8z6mgweu8j7fhdfhkjmmrxs6k66mnwg6x2cty9ehku6t0dchsz9mhwden5te0wfjkccte9ehx7um5wghxjmnxduhs5nd6j2 can handle a node setup?

#AskNostr