If the veneering ceramic has a smaller CTE (coefficient of thermal expansion) than the framework CTE, you should be ok...
Emax Ceram CTE 9.3 (for dentins and addons),9.5 (for glaze) x 10-6 K-1 on a temp range (100 - 400 C )
Celtra Press ingot CTE 9.7 x 10-6 K-1 on a temp range ( 25 - 500 C )
Hope it helps.