Use of swipe actions over buttons
For touch screen devices using swipe actions makes more sense than clicking virtual buttons and that is why launching quick switcher on IOS is a tiny bit slow and tricky (you can open the command palette by swiping anywhere on the screen—can do it with your eyes closed—but tapping requires me to shift my focus).
Use of pull-action-menu of google chrome [IOS]
On chrome [IOS], pulling down to refresh reveals three options: refresh, new tab, and close tab.
in obsidian you could do the same but switch the actions to open command palette, quick switcher and anything else.