Shii-Cho, derived from the beginning of sword fighting, teaching basic movements in attack/defense.
Makashi, reasons stated already.
Djem So, reasons already stated.
Jar'Kai, this is more from gladiator form of fighting Dimachaerus. So it is possible, although it'd probably be better for shorter blade lengths, but given lightsabers can adjust length it should be doable.
Of course given that they have The Force to anticipate where their blade is going, it's probably not too much of a big deal.