  We discuss the implementation of two different truncated Generalized Gibbs
Ensembles (GGE) describing the stationary state after a mass quench process in
the Ising Field Theory. One truncated GGE is based on the semi-local charges of
the model, the other on regularized versions of its ultra-local charges. We
test the efficiency of the two different ensembles by comparing their
predictions for the stationary state values of the single-particle Green's
function $G(x) = \langle \psi^{\dagger}(x) \psi(0) \rangle$ of the complex
fermion field $\psi(x)$. We find that both truncated GGEs are able to recover
$G(x)$, but for a given number of charges the semi-local version performs
better.
