  We compute some exact results for the gap-ratio of mixed Wigner surmises for
up to four eigenvalues and $0\leq\beta\leq4$. The main results concern equal
mixtures of the GOE, GUE, and GSE random matrix classes. These give rise to
$2\times$GOE, $2\times$GUE, and $2\times$GSE~distributions. We find that
$2\times$GOE, $2\times$GUE are well approximated by the surmises of only 2+2
eigenvalues that are GOE and GUE distributed, respectively. The same is not
valid for $2\times$GSE, which is well estimated, by coincidence, by 2+2
eigenvalues of statistics intermediate between GUE and GSE.
