Are all ball nose end mills able to directly drill holes?

Are all ball nose end mills able to directly drill holes? ball nose slot drill slot drill or end mill In the unlikely event you need a near perfect result, a could be obtained by using an undersize tool to mill round pockets ball slot Solid carbide mini ball nose slot drill Design: With centre cut, suitable for drilling Application

ball slot Ball Nose End Mills for AluminiumStandard Length 2 Flute40° HelixMicro-grain Uncoated Carbidealso performs well on Non-ferrous Metals and Plastics

ball nose slot drill STARKE 18mm 2 Flute Ball Nose Coated Carbide Slot Drill 18x35x18x100  Solid carbide ballnose milling cutter 30° right hand flute helix allows for quick chip ejection Good for cutting copper and titanium