Any special consideration using vailant heat pump compatible unistor cylinder with standard system boiler with 65C flow temperature

[Samsg30]

Hi

I am going with new installation of system has boiler from Vailant 30kwh and a new hot water cylinder. Though there's no plan to put solar or heat pump as if now, we may consider this in the future.
So, if I go with the vailant unistor heat pump compatible hot water tank instead of a standard tank, do I need to be careful of something which isn't applicable if it would be a standard tank Vs heat pump compatible tank?
I'll be using boiler at 65C flow temperature so they heat up radiators as well when needed and same flow temperature will continue it's way to the long heating tube in the heat pump compatible cylinder.
As per my understanding, water will heat up faster due to the biggest coils but not sure why company even sell the old standard style cylinder if heat pump compatible cylinder is more efficient.
So is there any catch in going with heat pump compatible cylinder with standard gas boiler?

 

[dilalio]

Look at PDHW setup to enable boiler to ramp up for domestic hot water.

 

[Samsg30]

Will the vailant ecotech plus system boiler be able to handle priority hot water option and does it need any additional tech / unit to make pdhw work? I m looking for vailant boiler and vailant unistor cylinder