Depending on how the contract is structured, surely charters such as those offer a guaranteed profit and thus presumably actually a smart use of the E195s?
However, the schedules don't sim to fit on Saturday, for example the based E195 aircraft flies the scheduled routes to Faro and Malaga:
BE1771 SOU-FAO E195 08:40-11:15
BE1772 FAO-SOU E195 12:05-14:40
BE1677 SOU-AGP E195 15:20-18:55
BE1678 AGP-SOU E195 19:50-21:30
Then the Thomson charter to Mahon flies at the same times, is this on the Q400?
BE SOU-MAH E195 16:00-19:45
BE MAH-SOU E195 20:25-22:30