Strymon Mobius Utilities_Samplers Portamento is a perfect example

Portamento is a perfect example of slew applied to a CV: the slew circuit smooths the transitions between the stepped CVs normally used to determine pitch

and then adjust the speed and depth of the effect to suit your taste

Header on the PCB to connect to Quad Pingable LFO (QPLFO) to provide four CV Skew-able

In that case

Strymon Mobius Utilities_Samplers Portamento is a perfect exampleInfinitely Organic. Some might say we're driven. When our engineers lock themselves in our sound design labs for months on end, you might say we're obsessed. We have been dedicating ourselves to forging a collection of the most organic, luscious, expressive, and versatile modulation effects ever heard. It was an enormous missionwe painstakingly studied the nuances of the legendary modulations from the last five decades. We didn't stop at faithfully