It is a smart move as option on the phase that it would reduce reduce transaction fees and maximizes usability to faster transaction processes and so also it would be much an attractive avenue to expand the Bitcoin community users with new adoptors.

Although, there are tense of security risks involved because thefts would always keep eyes at the spot heartedly believing anyone sighted at uses of the ATM is a Bitcoin owner which can lead to double crossing the ATM user in or outside the installed ATM.

Therein are potential to attract physical attacks to steal their fund.
It is dynamically risky in the sense that the ATM can be tampered and manipulate it software security programs in compromise of it previous users privacies and gains access in attempts of stealing their funds.