Here is a simple SCH setup for controller that uses the least amount of buttons and has easy access to critical functions.

First lets set up some macros:

(Swiftrez)
/micon "Swiftcast"
/ac "Swiftcast"
/ac "Ressurection" <t>

(FastEos)
/micon "Swiftcast"
/ac "Summon"

(FastSelene)
/micon "Swiftcast"
/ac "Summon II"

(Eye for a Virus)
/micon "Virus"
/ac "Virus" <t>
/ac "Eye for an Eye" <t>
- target a hostile with this macro to cast virus on them, target a frendly to cast Eye for an Eye

Now go to Character Config> Hotbars> Cross> General and uncheck "Use pethotbar".

Then go to "Set Selection". Uncheck "Auto swift when weapon sheathed/unsheathed".
Then check "Enable customization when weapon is sheathed" and make sure Hotbar 1 and 3 are checked.
After, check "Enable customization when weapon is drawn" and make sure hotbar 1 and 3 are checked.
Now tapping R1 switches between hotbar 1 and 3 and skips the premade pet hotbar!

Next go to Character config> Hotbars> Cross> "Enable expanded controls" and set the (R2+L2) and (L2+R2) both to cross hotbar 2 left

Finally the actual layout, I personally use a Dualshock 4, so your mileage may vary:

Right Trigger(R2) - Cross hotbar 1 Right

Circle: Ruin
Cross: Cleric Stance
Square: Broil
Triangle: Ruin II

Right: Bio II
Down: Miasma
Left: Aero
Up: Bio

Left Trigger (L2) - Cross hotbar 1 Left

Circle: Adloquiom
Cross: Physick
Square: Succor
Triangle: Leeches

Right: Sacred Soil
Down: Lustrate
Left: Indomitability
Up: Aetherflow

Left + Right Triggers (L2+R2) - Cross hotbar 2 Left

Circle: Emergency Tactics
Cross: Bane
Square: Deployment Tactics
Triangle: Shadowflare

Right: (Eye for a Virus)
Down: Dissipation
Left: Stoneskin
Up: (Swiftrez)

Right Trigger (R2) - Crosshotbar 3 Right

Circle: Fey Covenant
Cross: Rouse
Square: Fey Illumination
Triangle: Whispering Dawn

Right: Heel
Down: Obey
Left: Place
Up: Sic

Left Tigger (L2) - Cross hotbar 3 Left

Circle: Silent Dawn
Cross: Rouse
Square: Fey Wind
Triangle: Fey Caress

Right: (FastSelene)
Down: Protect
Left: Sustain
Up: (FastEos)