Another of my concerns was the NFC technology as mentioned; haven’t seen some videos on social media where NFC enabled devices were just brought close to card holders bags and possibly their pockets and have transactions confirmed raised concerns for me
NFC is quite secure, and moreso with the fact that the environment that the user is using it in probably doesn't allow for any subtle eavedropping. Cloning the NFC doesn't prove to be useful because its encrypted data and they have proven it before. It is secure enough.
However, I personally wouldn't want to introduce another attack vector. It would still prefer for my HW wallet to be wired and for the data transfer to be more secure.
IMO, blind signing is the biggest drawback for me and it really helps for me to be able to physically confirm my transaction details on a separate device. Tangem provides no protection against this, nor for your environment to be perfectly safe.